31540053204 has 72 divisors (see below), whose sum is σ = 87022615680. Its totient is φ = 9552259200.

The previous prime is 31540053197. The next prime is 31540053229. The reversal of 31540053204 is 40235004513.

31540053204 is a `hidden beast` number, since 3 + 1 + 5 + 400 + 53 + 204 = 666.

It is a super-2 number, since 2×31540053204² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 719632 + ... + 762200.

It is an arithmetic number, because the mean of its divisors is an integer number (1208647440).

Almost surely, 2^31540053204 is an apocalyptic number.

It is an amenable number.

31540053204 is an abundant number, since it is smaller than the sum of its proper divisors (55482562476).

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

31540053204 is a wasteful number, since it uses less digits than its factorization.

31540053204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44461 (or 44456 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 31540053204 its reverse (40235004513), we get a palindrome (71775057717).

The spelling of 31540053204 in words is "thirty-one billion, five hundred forty million, fifty-three thousand, two hundred four".