231322302323131 has 16 divisors (see below), whose sum is σ = 233763835345920. Its totient is φ = 228892678862400.

The previous prime is 231322302323071. The next prime is 231322302323179. The reversal of 231322302323131 is 131323203223132.

It is a cyclic number.

It is not a de Polignac number, because 231322302323131 - 2⁷ = 231322302323003 is a prime.

It is a super-2 number, since 2×231322302323131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231322302323093 and 231322302323102.

It is not an unprimeable number, because it can be changed into a prime (231322302323731) 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, 61380510 + ... + 65040076.

It is an arithmetic number, because the mean of its divisors is an integer number (14610239709120).

Almost surely, 2^{231322302323131} is an apocalyptic number.

231322302323131 is a deficient number, since it is larger than the sum of its proper divisors (2441533022789).

231322302323131 is a wasteful number, since it uses less digits than its factorization.

231322302323131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661194.

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 231322302323131 its reverse (131323203223132), we get a palindrome (362645505546263).

Subtracting from 231322302323131 its reverse (131323203223132), we obtain a palindrome (99999099099999).

The spelling of 231322302323131 in words is "two hundred thirty-one trillion, three hundred twenty-two billion, three hundred two million, three hundred twenty-three thousand, one hundred thirty-one".