231022202131 has 32 divisors (see below), whose sum is σ = 278542540800. Its totient is φ = 191329437600.

The previous prime is 231022202129. The next prime is 231022202153. The reversal of 231022202131 is 131202220132.

It is not a de Polignac number, because 231022202131 - 2¹ = 231022202129 is a prime.

It is a super-2 number, since 2×231022202131² (a number of 24 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 = 231022202099 and 231022202108.

It is not an unprimeable number, because it can be changed into a prime (231022202231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6862761 + ... + 6896341.

It is an arithmetic number, because the mean of its divisors is an integer number (8704454400).

Almost surely, 2^231022202131 is an apocalyptic number.

231022202131 is a deficient number, since it is larger than the sum of its proper divisors (47520338669).

231022202131 is an equidigital number, since it uses as much as digits as its factorization.

231022202131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34280 (or 34266 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 231022202131 its reverse (131202220132), we get a palindrome (362224422263).

The spelling of 231022202131 in words is "two hundred thirty-one billion, twenty-two million, two hundred two thousand, one hundred thirty-one".