31040104140 has 72 divisors (see below), whose sum is σ = 95750862480. Its totient is φ = 8137064064.

The previous prime is 31040104097. The next prime is 31040104153. The reversal of 31040104140 is 4140104013.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1450779 + ... + 1472018.

It is an arithmetic number, because the mean of its divisors is an integer number (1329873090).

Almost surely, 2^31040104140 is an apocalyptic number.

31040104140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31040104140 is an abundant number, since it is smaller than the sum of its proper divisors (64710758340).

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

31040104140 is a wasteful number, since it uses less digits than its factorization.

31040104140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922871 (or 2922866 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 31040104140 its reverse (4140104013), we get a palindrome (35180208153).

The spelling of 31040104140 in words is "thirty-one billion, forty million, one hundred four thousand, one hundred forty".