31540440522 has 32 divisors (see below), whose sum is σ = 64132680960. Its totient is φ = 10338275520.

The previous prime is 31540440521. The next prime is 31540440539. The reversal of 31540440522 is 22504404513.

It is a self number, because there is not a number n which added to its sum of digits gives 31540440522.

It is not an unprimeable number, because it can be changed into a prime (31540440521) 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 15 ways as a sum of consecutive naturals, for example, 1623804 + ... + 1643112.

It is an arithmetic number, because the mean of its divisors is an integer number (2004146280).

Almost surely, 2^31540440522 is an apocalyptic number.

31540440522 is an abundant number, since it is smaller than the sum of its proper divisors (32592240438).

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

31540440522 is a wasteful number, since it uses less digits than its factorization.

31540440522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23838.

The product of its (nonzero) digits is 19200, while the sum is 30.

The spelling of 31540440522 in words is "thirty-one billion, five hundred forty million, four hundred forty thousand, five hundred twenty-two".