31344540040 has 64 divisors (see below), whose sum is σ = 76971384000. Its totient is φ = 11392861440.

The previous prime is 31344540023. The next prime is 31344540079. The reversal of 31344540040 is 4004544313.

It is a junction number, because it is equal to n+sod(n) for n = 31344539990 and 31344540008.

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 15 ways as a sum of consecutive naturals, for example, 1036251 + ... + 1066069.

It is an arithmetic number, because the mean of its divisors is an integer number (1202677875).

Almost surely, 2^31344540040 is an apocalyptic number.

It is an amenable number.

31344540040 is an abundant number, since it is smaller than the sum of its proper divisors (45626843960).

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

31344540040 is a wasteful number, since it uses less digits than its factorization.

31344540040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32230 (or 32226 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The spelling of 31344540040 in words is "thirty-one billion, three hundred forty-four million, five hundred forty thousand, forty".