331775997 has 16 divisors (see below), whose sum is σ = 506634240. Its totient is φ = 189184752.

The previous prime is 331775879. The next prime is 331776001. The reversal of 331775997 is 799577133.

It is not a de Polignac number, because 331775997 - 2⁷ = 331775869 is a prime.

It is a super-2 number, since 2×331775997² = 220150624370688018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331775497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6433 + ... + 26550.

It is an arithmetic number, because the mean of its divisors is an integer number (31664640).

Almost surely, 2^331775997 is an apocalyptic number.

It is an amenable number.

331775997 is a deficient number, since it is larger than the sum of its proper divisors (174858243).

331775997 is a wasteful number, since it uses less digits than its factorization.

331775997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33472.

The product of its digits is 1250235, while the sum is 51.

The square root of 331775997 is about 18214.7192402189. The cubic root of 331775997 is about 692.2797916610.

The spelling of 331775997 in words is "three hundred thirty-one million, seven hundred seventy-five thousand, nine hundred ninety-seven".