31862254172 has 12 divisors (see below), whose sum is σ = 63724508400. Its totient is φ = 13655251776.

The previous prime is 31862254141. The next prime is 31862254183. The reversal of 31862254172 is 27145226813.

31862254172 is an admirable number.

It is a super-2 number, since 2×31862254172² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568968797 + ... + 568968852.

It is an arithmetic number, because the mean of its divisors is an integer number (5310375700).

Almost surely, 2^31862254172 is an apocalyptic number.

It is an amenable number.

31862254172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31862254172 is a wasteful number, since it uses less digits than its factorization.

31862254172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137937660 (or 1137937658 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The spelling of 31862254172 in words is "thirty-one billion, eight hundred sixty-two million, two hundred fifty-four thousand, one hundred seventy-two".