331977694 has 16 divisors (see below), whose sum is σ = 502437456. Its totient is φ = 164505600.

The previous prime is 331977593. The next prime is 331977707. The reversal of 331977694 is 496779133.

It is a happy number.

It is a super-2 number, since 2×331977694² = 220418378627115272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 106924 + ... + 109984.

It is an arithmetic number, because the mean of its divisors is an integer number (31402341).

Almost surely, 2^331977694 is an apocalyptic number.

331977694 is a deficient number, since it is larger than the sum of its proper divisors (170459762).

331977694 is a wasteful number, since it uses less digits than its factorization.

331977694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3531.

The product of its digits is 857304, while the sum is 49.

The square root of 331977694 is about 18220.2550476112. The cubic root of 331977694 is about 692.4200494179.

The spelling of 331977694 in words is "three hundred thirty-one million, nine hundred seventy-seven thousand, six hundred ninety-four".