331031010121 has 4 divisors (see below), whose sum is σ = 378321154432. Its totient is φ = 283740865812.

The previous prime is 331031010091. The next prime is 331031010143. The reversal of 331031010121 is 121010130133.

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 a cyclic number.

It is not a de Polignac number, because 331031010121 - 2³⁵ = 296671271753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331031010095 and 331031010104.

It is not an unprimeable number, because it can be changed into a prime (331031010181) 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, 23645072145 + ... + 23645072158.

It is an arithmetic number, because the mean of its divisors is an integer number (94580288608).

Almost surely, 2^331031010121 is an apocalyptic number.

It is an amenable number.

331031010121 is a deficient number, since it is larger than the sum of its proper divisors (47290144311).

331031010121 is an equidigital number, since it uses as much as digits as its factorization.

331031010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47290144310.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 331031010121 its reverse (121010130133), we get a palindrome (452041140254).

The spelling of 331031010121 in words is "three hundred thirty-one billion, thirty-one million, ten thousand, one hundred twenty-one".