331323132121 has 16 divisors (see below), whose sum is σ = 343482128640. Its totient is φ = 319408750080.

The previous prime is 331323132089. The next prime is 331323132131. The reversal of 331323132121 is 121231323133.

It is a cyclic number.

It is not a de Polignac number, because 331323132121 - 2⁵ = 331323132089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331323132131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 789735 + ... + 1134163.

It is an arithmetic number, because the mean of its divisors is an integer number (21467633040).

Almost surely, 2^331323132121 is an apocalyptic number.

It is an amenable number.

331323132121 is a deficient number, since it is larger than the sum of its proper divisors (12158996519).

331323132121 is a wasteful number, since it uses less digits than its factorization.

331323132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344784.

The product of its digits is 1944, while the sum is 25.

Adding to 331323132121 its reverse (121231323133), we get a palindrome (452554455254).

The spelling of 331323132121 in words is "three hundred thirty-one billion, three hundred twenty-three million, one hundred thirty-two thousand, one hundred twenty-one".