31103253108 has 72 divisors (see below), whose sum is σ = 83270540808. Its totient is φ = 9755117568.

The previous prime is 31103252993. The next prime is 31103253109. The reversal of 31103253108 is 80135230113.

31103253108 is a `hidden beast` number, since 311 + 0 + 32 + 5 + 310 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 24383844 + 31078869264 = 4938^2 + 176292^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31103253109) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 3773760 + ... + 3781992.

It is an arithmetic number, because the mean of its divisors is an integer number (1156535289).

Almost surely, 2^31103253108 is an apocalyptic number.

It is an amenable number.

31103253108 is an abundant number, since it is smaller than the sum of its proper divisors (52167287700).

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

31103253108 is a wasteful number, since it uses less digits than its factorization.

31103253108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14433 (or 14428 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 31103253108 in words is "thirty-one billion, one hundred three million, two hundred fifty-three thousand, one hundred eight".