331222131 has 12 divisors (see below), whose sum is σ = 486275920. Its totient is φ = 217194480.

The previous prime is 331222109. The next prime is 331222159. The reversal of 331222131 is 131222133.

It is not a de Polignac number, because 331222131 - 2¹⁵ = 331189363 is a prime.

It is a super-2 number, since 2×331222131² = 219416200128362322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331223131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 301111 + ... + 302208.

Almost surely, 2^331222131 is an apocalyptic number.

331222131 is a deficient number, since it is larger than the sum of its proper divisors (155053789).

331222131 is a wasteful number, since it uses less digits than its factorization.

331222131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603386 (or 603383 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 331222131 is about 18199.5090867858. The cubic root of 331222131 is about 691.8943470573.

Adding to 331222131 its reverse (131222133), we get a palindrome (462444264).

It can be divided in two parts, 33122 and 2131, that added together give a palindrome (35253).

The spelling of 331222131 in words is "three hundred thirty-one million, two hundred twenty-two thousand, one hundred thirty-one".