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31068004261 = 719435432419
BaseRepresentation
bin11100111011110011…
…000001111110100101
32222012011221010210111
4130323303001332211
51002111402114021
622134503053021
72146615451620
oct347363017645
988164833714
1031068004261
11121a3095488
126030741171
132c11722598
14170a218db7
15c1c78e8e1
hex73bcc1fa5

31068004261 has 16 divisors (see below), whose sum is σ = 38244236800. Its totient is φ = 24641448048.

The previous prime is 31068004259. The next prime is 31068004327. The reversal of 31068004261 is 16240086013.

It is a happy number.

It is not a de Polignac number, because 31068004261 - 21 = 31068004259 is a prime.

It is a super-2 number, since 2×310680042612 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31068004861) 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, 2710491 + ... + 2721928.

It is an arithmetic number, because the mean of its divisors is an integer number (2390264800).

Almost surely, 231068004261 is an apocalyptic number.

It is an amenable number.

31068004261 is a deficient number, since it is larger than the sum of its proper divisors (7176232539).

31068004261 is a wasteful number, since it uses less digits than its factorization.

31068004261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5432488.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 31068004261 in words is "thirty-one billion, sixty-eight million, four thousand, two hundred sixty-one".

Divisors: 1 7 19 43 133 301 817 5719 5432419 38026933 103215961 233594017 722511727 1635158119 4438286323 31068004261