331695506 has 16 divisors (see below), whose sum is σ = 503223840. Its totient is φ = 163960800.

The previous prime is 331695499. The next prime is 331695523. The reversal of 331695506 is 605596133.

It is a super-2 number, since 2×331695506² = 220043817401192072, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 331695506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127325 + ... + 129903.

It is an arithmetic number, because the mean of its divisors is an integer number (31451490).

Almost surely, 2^331695506 is an apocalyptic number.

331695506 is a deficient number, since it is larger than the sum of its proper divisors (171528334).

331695506 is a wasteful number, since it uses less digits than its factorization.

331695506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3289.

The product of its (nonzero) digits is 72900, while the sum is 38.

The square root of 331695506 is about 18212.5096019192. The cubic root of 331695506 is about 692.2238032832.

The spelling of 331695506 in words is "three hundred thirty-one million, six hundred ninety-five thousand, five hundred six".