31364256 has 96 divisors (see below), whose sum is σ = 102670848. Its totient is φ = 8144640.

The previous prime is 31364251. The next prime is 31364257. The reversal of 31364256 is 65246313.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (31364251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5271 + ... + 9513.

It is an arithmetic number, because the mean of its divisors is an integer number (1069488).

Almost surely, 2^31364256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31364256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51335424).

31364256 is an abundant number, since it is smaller than the sum of its proper divisors (71306592).

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

31364256 is a wasteful number, since it uses less digits than its factorization.

31364256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4274 (or 4266 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 31364256 is about 5600.3799871080. The cubic root of 31364256 is about 315.3636716854.

The spelling of 31364256 in words is "thirty-one million, three hundred sixty-four thousand, two hundred fifty-six".