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1311022102130 = 251319717475749
BaseRepresentation
bin10011000100111111000…
…000011011011001110010
311122022222101101020212222
4103010333000123121302
5132434433124232010
62442135241321042
7163501231000046
oct23047700333162
94568871336788
101311022102130
11466001886704
12192102796182
139682378cc70
144764d370026
15241818cd355
hex1313f01b672

1311022102130 has 64 divisors (see below), whose sum is σ = 2712800160000. Its totient is φ = 452133239040.

The previous prime is 1311022102129. The next prime is 1311022102141. The reversal of 1311022102130 is 312012201131.

It is a junction number, because it is equal to n+sod(n) for n = 1311022102099 and 1311022102108.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3562505 + ... + 3913244.

It is an arithmetic number, because the mean of its divisors is an integer number (42387502500).

Almost surely, 21311022102130 is an apocalyptic number.

1311022102130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311022102130 is an abundant number, since it is smaller than the sum of its proper divisors (1401778057870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311022102130 is a wasteful number, since it uses less digits than its factorization.

1311022102130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7475859.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1311022102130 its reverse (312012201131), we get a palindrome (1623034303261).

Subtracting from 1311022102130 its reverse (312012201131), we obtain a palindrome (999009900999).

The spelling of 1311022102130 in words is "one trillion, three hundred eleven billion, twenty-two million, one hundred two thousand, one hundred thirty".

Divisors: 1 2 5 10 13 19 26 38 65 71 95 130 142 190 247 355 494 710 923 1235 1349 1846 2470 2698 4615 6745 9230 13490 17537 35074 87685 175370 7475749 14951498 37378745 74757490 97184737 142039231 194369474 284078462 485923685 530778179 710196155 971847370 1061556358 1420392310 1846510003 2653890895 3693020006 5307781790 6900116327 9232550015 10084785401 13800232654 18465100030 20169570802 34500581635 50423927005 69001163270 100847854010 131102210213 262204420426 655511051065 1311022102130