331144131 has 4 divisors (see below), whose sum is σ = 441525512. Its totient is φ = 220762752.

The previous prime is 331144123. The next prime is 331144147. The reversal of 331144131 is 131441133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131441133 = 3 ⋅43813711.

It is not a de Polignac number, because 331144131 - 2³ = 331144123 is a prime.

It is a super-2 number, since 2×331144131² = 219312870991490322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331144098 and 331144107.

It is not an unprimeable number, because it can be changed into a prime (331144171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55190686 + ... + 55190691.

It is an arithmetic number, because the mean of its divisors is an integer number (110381378).

Almost surely, 2^331144131 is an apocalyptic number.

331144131 is a deficient number, since it is larger than the sum of its proper divisors (110381381).

331144131 is a wasteful number, since it uses less digits than its factorization.

331144131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110381380.

The product of its digits is 432, while the sum is 21.

The square root of 331144131 is about 18197.3660456672. The cubic root of 331144131 is about 691.8400310451.

Adding to 331144131 its reverse (131441133), we get a palindrome (462585264).

The spelling of 331144131 in words is "three hundred thirty-one million, one hundred forty-four thousand, one hundred thirty-one".