331914921 has 8 divisors (see below), whose sum is σ = 476595840. Its totient is φ = 204255312.

The previous prime is 331914917. The next prime is 331914931. The reversal of 331914921 is 129419133.

It is a happy number.

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

It is not a de Polignac number, because 331914921 - 2² = 331914917 is a prime.

It is a super-2 number, since 2×331914921² = 220335029564872482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331914911) 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, 4255281 + ... + 4255358.

It is an arithmetic number, because the mean of its divisors is an integer number (59574480).

Almost surely, 2^331914921 is an apocalyptic number.

It is an amenable number.

331914921 is a deficient number, since it is larger than the sum of its proper divisors (144680919).

331914921 is a wasteful number, since it uses less digits than its factorization.

331914921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8510655.

The product of its digits is 5832, while the sum is 33.

The square root of 331914921 is about 18218.5323503294. The cubic root of 331914921 is about 692.3764038914.

The spelling of 331914921 in words is "three hundred thirty-one million, nine hundred fourteen thousand, nine hundred twenty-one".