231302233121 has 32 divisors (see below), whose sum is σ = 253583664768. Its totient is φ = 210106408960.

The previous prime is 231302233109. The next prime is 231302233139. The reversal of 231302233121 is 121332203132.

It is a de Polignac number, because none of the positive numbers 2^k-231302233121 is a prime.

It is a super-2 number, since 2×231302233121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231302233171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46230206 + ... + 46235208.

It is an arithmetic number, because the mean of its divisors is an integer number (7924489524).

Almost surely, 2^231302233121 is an apocalyptic number.

It is an amenable number.

231302233121 is a deficient number, since it is larger than the sum of its proper divisors (22281431647).

231302233121 is a wasteful number, since it uses less digits than its factorization.

231302233121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5761.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 231302233121 its reverse (121332203132), we get a palindrome (352634436253).

The spelling of 231302233121 in words is "two hundred thirty-one billion, three hundred two million, two hundred thirty-three thousand, one hundred twenty-one".