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2122103031 = 31638235273
BaseRepresentation
bin111111001111100…
…1011100011110111
312110220010000002120
41332133023203313
513321224244111
6550324011023
7103405402206
oct17637134367
95426100076
102122103031
11999965464
124b2830a73
1327a859589
14161ba123d
15c6481406
hex7e7cb8f7

2122103031 has 16 divisors (see below), whose sum is σ = 2850829056. Its totient is φ = 1404081216.

The previous prime is 2122103023. The next prime is 2122103041. The reversal of 2122103031 is 1303012212.

It is not a de Polignac number, because 2122103031 - 23 = 2122103023 is a prime.

It is a super-2 number, since 2×21221030312 = 9006642548358773922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2122103031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122103041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399811 + ... + 405083.

It is an arithmetic number, because the mean of its divisors is an integer number (178176816).

Almost surely, 22122103031 is an apocalyptic number.

2122103031 is a deficient number, since it is larger than the sum of its proper divisors (728726025).

2122103031 is a wasteful number, since it uses less digits than its factorization.

2122103031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6262.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2122103031 is about 46066.2895293294. The cubic root of 2122103031 is about 1285.0563003791.

Adding to 2122103031 its reverse (1303012212), we get a palindrome (3425115243).

The spelling of 2122103031 in words is "two billion, one hundred twenty-two million, one hundred three thousand, thirty-one".

Divisors: 1 3 163 489 823 2469 5273 15819 134149 402447 859499 2578497 4339679 13019037 707367677 2122103031