31540455464 has 32 divisors (see below), whose sum is σ = 67663512000. Its totient is φ = 13501973760.

The previous prime is 31540455439. The next prime is 31540455517. The reversal of 31540455464 is 46455404513.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270314 + ... + 368985.

It is an arithmetic number, because the mean of its divisors is an integer number (2114484750).

Almost surely, 2^31540455464 is an apocalyptic number.

It is an amenable number.

31540455464 is an abundant number, since it is smaller than the sum of its proper divisors (36123056536).

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

31540455464 is a wasteful number, since it uses less digits than its factorization.

31540455464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640193 (or 640189 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 41.

Adding to 31540455464 its reverse (46455404513), we get a palindrome (77995859977).

The spelling of 31540455464 in words is "thirty-one billion, five hundred forty million, four hundred fifty-five thousand, four hundred sixty-four".