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131323211310 = 23543671519417
BaseRepresentation
bin111101001001101111…
…0010010111000101110
3110112222010210100022010
41322103132102320232
54122422220230220
6140155024102050
712326211610164
oct1722336227056
9415863710263
10131323211310
115076a5903a5
122154ba64926
13c4cb0787c5
1464db10d234
1536390db1e0
hex1e93792e2e

131323211310 has 64 divisors (see below), whose sum is σ = 327319103232. Its totient is φ = 33694569216.

The previous prime is 131323211281. The next prime is 131323211323. The reversal of 131323211310 is 13112323131.

It is a happy number.

It is a super-2 number, since 2×1313232113102 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 673279 + ... + 846138.

It is an arithmetic number, because the mean of its divisors is an integer number (5114360988).

Almost surely, 2131323211310 is an apocalyptic number.

131323211310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131323211310 is an abundant number, since it is smaller than the sum of its proper divisors (195995891922).

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

131323211310 is a wasteful number, since it uses less digits than its factorization.

131323211310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519537.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 131323211310 its reverse (13112323131), we get a palindrome (144435534441).

The spelling of 131323211310 in words is "one hundred thirty-one billion, three hundred twenty-three million, two hundred eleven thousand, three hundred ten".

Divisors: 1 2 3 5 6 10 15 30 43 67 86 129 134 201 215 258 335 402 430 645 670 1005 1290 2010 2881 5762 8643 14405 17286 28810 43215 86430 1519417 3038834 4558251 7597085 9116502 15194170 22791255 45582510 65334931 101800939 130669862 196004793 203601878 305402817 326674655 392009586 509004695 610805634 653349310 980023965 1018009390 1527014085 1960047930 3054028170 4377440377 8754880754 13132321131 21887201885 26264642262 43774403770 65661605655 131323211310