331970256 has 60 divisors (see below), whose sum is σ = 931534500. Its totient is φ = 110361600.

The previous prime is 331970251. The next prime is 331970257. The reversal of 331970256 is 652079133.

331970256 is a `hidden beast` number, since 331 + 9 + 70 + 256 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 171086400 + 160883856 = 13080^2 + 12684^2 .

It is a super-2 number, since 2×331970256² = 220408501737411072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 331970256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331970251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54870 + ... + 60618.

It is an arithmetic number, because the mean of its divisors is an integer number (15525575).

Almost surely, 2^331970256 is an apocalyptic number.

331970256 is a gapful number since it is divisible by the number (36) 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 331970256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (465767250).

331970256 is an abundant number, since it is smaller than the sum of its proper divisors (599564244).

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

331970256 is a wasteful number, since it uses less digits than its factorization.

331970256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6164 (or 6155 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 331970256 is about 18220.0509329694. The cubic root of 331970256 is about 692.4148781279.

The spelling of 331970256 in words is "three hundred thirty-one million, nine hundred seventy thousand, two hundred fifty-six".