31400263028 has 6 divisors (see below), whose sum is σ = 54950460306. Its totient is φ = 15700131512.

The previous prime is 31400263007. The next prime is 31400263031. The reversal of 31400263028 is 82036200413.

It can be written as a sum of positive squares in only one way, i.e., 26729634064 + 4670628964 = 163492^2 + 68342^2 .

It is a super-3 number, since 3×31400263028³ (a number of 32 digits) contains 333 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 (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3925032875 + ... + 3925032882.

It is an arithmetic number, because the mean of its divisors is an integer number (9158410051).

Almost surely, 2^31400263028 is an apocalyptic number.

It is an amenable number.

31400263028 is a deficient number, since it is larger than the sum of its proper divisors (23550197278).

31400263028 is a wasteful number, since it uses less digits than its factorization.

31400263028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7850065761 (or 7850065759 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 31400263028 in words is "thirty-one billion, four hundred million, two hundred sixty-three thousand, twenty-eight".