331945506 has 16 divisors (see below), whose sum is σ = 737656800. Its totient is φ = 110648484.

The previous prime is 331945487. The next prime is 331945507. The reversal of 331945506 is 605549133.

331945506 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×331945506² = 220375637907192072, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (331945507) 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, 3073516 + ... + 3073623.

It is an arithmetic number, because the mean of its divisors is an integer number (46103550).

Almost surely, 2^331945506 is an apocalyptic number.

331945506 is an abundant number, since it is smaller than the sum of its proper divisors (405711294).

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

331945506 is a wasteful number, since it uses less digits than its factorization.

331945506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6147150 (or 6147144 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 331945506 is about 18219.3717235255. The cubic root of 331945506 is about 692.3976700660.

The spelling of 331945506 in words is "three hundred thirty-one million, nine hundred forty-five thousand, five hundred six".