331991199133 has 32 divisors (see below), whose sum is σ = 382811351040. Its totient is φ = 284744237760.

The previous prime is 331991199091. The next prime is 331991199179.

331991199133 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 331991199133 - 2²⁵ = 331957644701 is a prime.

It is a super-2 number, since 2×331991199133² (a number of 24 digits) 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 (331991109133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95866360 + ... + 95869822.

It is an arithmetic number, because the mean of its divisors is an integer number (11962854720).

Almost surely, 2^331991199133 is an apocalyptic number.

It is an amenable number.

331991199133 is a deficient number, since it is larger than the sum of its proper divisors (50820151907).

331991199133 is a wasteful number, since it uses less digits than its factorization.

331991199133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5257.

The product of its digits is 531441, while the sum is 52.

The spelling of 331991199133 in words is "three hundred thirty-one billion, nine hundred ninety-one million, one hundred ninety-nine thousand, one hundred thirty-three".