331310132121 has 4 divisors (see below), whose sum is σ = 441746842832. Its totient is φ = 220873421412.

The previous prime is 331310132039. The next prime is 331310132129. The reversal of 331310132121 is 121231013133.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 331310132121 - 2³³ = 322720197529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331310132129) 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, 55218355351 + ... + 55218355356.

It is an arithmetic number, because the mean of its divisors is an integer number (110436710708).

Almost surely, 2^331310132121 is an apocalyptic number.

It is an amenable number.

331310132121 is a deficient number, since it is larger than the sum of its proper divisors (110436710711).

331310132121 is a wasteful number, since it uses less digits than its factorization.

331310132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110436710710.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 331310132121 its reverse (121231013133), we get a palindrome (452541145254).

The spelling of 331310132121 in words is "three hundred thirty-one billion, three hundred ten million, one hundred thirty-two thousand, one hundred twenty-one".