331032121 has 8 divisors (see below), whose sum is σ = 378483584. Its totient is φ = 283620960.

The previous prime is 331032089. The next prime is 331032133. The reversal of 331032121 is 121230133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 331032121 - 2⁵ = 331032089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331032095 and 331032104.

It is not an unprimeable number, because it can be changed into a prime (331032161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10276 + ... + 27706.

It is an arithmetic number, because the mean of its divisors is an integer number (47310448).

Almost surely, 2^331032121 is an apocalyptic number.

It is an amenable number.

331032121 is a deficient number, since it is larger than the sum of its proper divisors (47451463).

331032121 is a wasteful number, since it uses less digits than its factorization.

331032121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20151.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 331032121 is about 18194.2881421615. The cubic root of 331032121 is about 691.7620169382.

Adding to 331032121 its reverse (121230133), we get a palindrome (452262254).

The spelling of 331032121 in words is "three hundred thirty-one million, thirty-two thousand, one hundred twenty-one".