331131002 has 4 divisors (see below), whose sum is σ = 496696506. Its totient is φ = 165565500.

The previous prime is 331130999. The next prime is 331131011. The reversal of 331131002 is 200131133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 326850241 + 4280761 = 18079^2 + 2069^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82782749 + ... + 82782752.

Almost surely, 2^331131002 is an apocalyptic number.

331131002 is a deficient number, since it is larger than the sum of its proper divisors (165565504).

331131002 is a wasteful number, since it uses less digits than its factorization.

331131002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165565503.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 331131002 is about 18197.0053030712. The cubic root of 331131002 is about 691.8308877074.

Adding to 331131002 its reverse (200131133), we get a palindrome (531262135).

The spelling of 331131002 in words is "three hundred thirty-one million, one hundred thirty-one thousand, two".