31540330404 has 72 divisors (see below), whose sum is σ = 86994546912. Its totient is φ = 9555511680.

The previous prime is 31540330387. The next prime is 31540330421. The reversal of 31540330404 is 40403304513.

31540330404 is a `hidden beast` number, since 315 + 40 + 3 + 304 + 0 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (31540330387) and next prime (31540330421).

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 in 23 ways as a sum of consecutive naturals, for example, 3053152 + ... + 3063464.

It is an arithmetic number, because the mean of its divisors is an integer number (1208257596).

Almost surely, 2^31540330404 is an apocalyptic number.

It is an amenable number.

31540330404 is an abundant number, since it is smaller than the sum of its proper divisors (55454216508).

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

31540330404 is a wasteful number, since it uses less digits than its factorization.

31540330404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18057 (or 18052 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 31540330404 its reverse (40403304513), we get a palindrome (71943634917).

The spelling of 31540330404 in words is "thirty-one billion, five hundred forty million, three hundred thirty thousand, four hundred four".