331688894 has 8 divisors (see below), whose sum is σ = 497647800. Its totient is φ = 165806296.

The previous prime is 331688891. The next prime is 331688897. The reversal of 331688894 is 498886133.

It is an interprime number because it is at equal distance from previous prime (331688891) and next prime (331688897).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×331688894² = 220035044805886472, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331688891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6569 + ... + 26580.

It is an arithmetic number, because the mean of its divisors is an integer number (62205975).

Almost surely, 2^331688894 is an apocalyptic number.

331688894 is a deficient number, since it is larger than the sum of its proper divisors (165958906).

331688894 is a wasteful number, since it uses less digits than its factorization.

331688894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38154.

The product of its digits is 995328, while the sum is 50.

The square root of 331688894 is about 18212.3280774315. The cubic root of 331688894 is about 692.2192036689.

The spelling of 331688894 in words is "three hundred thirty-one million, six hundred eighty-eight thousand, eight hundred ninety-four".