31465164 has 72 divisors (see below), whose sum is σ = 80183488. Its totient is φ = 9596160.

The previous prime is 31465153. The next prime is 31465177. The reversal of 31465164 is 46156413.

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, 149019 + ... + 149229.

Almost surely, 2^31465164 is an apocalyptic number.

31465164 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31465164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40091744).

31465164 is an abundant number, since it is smaller than the sum of its proper divisors (48718324).

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

31465164 is a wasteful number, since it uses less digits than its factorization.

31465164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 276 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 31465164 is about 5609.3817841185. The cubic root of 31465164 is about 315.7015154034.

The spelling of 31465164 in words is "thirty-one million, four hundred sixty-five thousand, one hundred sixty-four".