31897457466 has 16 divisors (see below), whose sum is σ = 72908474304. Its totient is φ = 9113559264.

The previous prime is 31897457461. The next prime is 31897457467. The reversal of 31897457466 is 66475479813.

It is not an unprimeable number, because it can be changed into a prime (31897457461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379731595 + ... + 379731678.

It is an arithmetic number, because the mean of its divisors is an integer number (4556779644).

Almost surely, 2^31897457466 is an apocalyptic number.

31897457466 is an abundant number, since it is smaller than the sum of its proper divisors (41011016838).

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

31897457466 is a wasteful number, since it uses less digits than its factorization.

31897457466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759463285.

The product of its digits is 30481920, while the sum is 60.

The spelling of 31897457466 in words is "thirty-one billion, eight hundred ninety-seven million, four hundred fifty-seven thousand, four hundred sixty-six".