331079997 has 8 divisors (see below), whose sum is σ = 464673760. Its totient is φ = 209103120.

The previous prime is 331079971. The next prime is 331079999. The reversal of 331079997 is 799970133.

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

It is not a de Polignac number, because 331079997 - 2⁶ = 331079933 is a prime.

It is a super-2 number, since 2×331079997² = 219227928827040018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331079999) 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, 2904154 + ... + 2904267.

It is an arithmetic number, because the mean of its divisors is an integer number (58084220).

Almost surely, 2^331079997 is an apocalyptic number.

It is an amenable number.

331079997 is a deficient number, since it is larger than the sum of its proper divisors (133593763).

331079997 is a wasteful number, since it uses less digits than its factorization.

331079997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5808443.

The product of its (nonzero) digits is 321489, while the sum is 48.

The square root of 331079997 is about 18195.6037822327. The cubic root of 331079997 is about 691.7953643585.

The spelling of 331079997 in words is "three hundred thirty-one million, seventy-nine thousand, nine hundred ninety-seven".