31103112040 has 128 divisors (see below), whose sum is σ = 93961969920. Its totient is φ = 8948736000.

The previous prime is 31103112011. The next prime is 31103112067. The reversal of 31103112040 is 4021130113.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 348361 + ... + 428440.

It is an arithmetic number, because the mean of its divisors is an integer number (734077890).

Almost surely, 2^31103112040 is an apocalyptic number.

It is an amenable number.

31103112040 is an abundant number, since it is smaller than the sum of its proper divisors (62858857880).

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

31103112040 is a wasteful number, since it uses less digits than its factorization.

31103112040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776843 (or 776839 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31103112040 its reverse (4021130113), we get a palindrome (35124242153).

The spelling of 31103112040 in words is "thirty-one billion, one hundred three million, one hundred twelve thousand, forty".