331161465321 has 12 divisors (see below), whose sum is σ = 478421534448. Its totient is φ = 220738681464.

The previous prime is 331161465233. The next prime is 331161465331. The reversal of 331161465321 is 123564161133.

331161465321 is a `hidden beast` number, since 3 + 3 + 1 + 1 + 614 + 6 + 5 + 32 + 1 = 666.

331161465321 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-331161465321 is a prime.

It is a super-2 number, since 2×331161465321² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331161465331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2910135 + ... + 3021788.

It is an arithmetic number, because the mean of its divisors is an integer number (39868461204).

Almost surely, 2^331161465321 is an apocalyptic number.

It is an amenable number.

331161465321 is a deficient number, since it is larger than the sum of its proper divisors (147260069127).

331161465321 is a wasteful number, since it uses less digits than its factorization.

331161465321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5938132 (or 5938129 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The spelling of 331161465321 in words is "three hundred thirty-one billion, one hundred sixty-one million, four hundred sixty-five thousand, three hundred twenty-one".