1231331231022 has 16 divisors (see below), whose sum is σ = 2466049901952. Its totient is φ = 409879170360.

The previous prime is 1231331230991. The next prime is 1231331231023. The reversal of 1231331231022 is 2201321331321.

It is a junction number, because it is equal to n+sod(n) for n = 1231331230983 and 1231331231001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231331231023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141138604 + ... + 141147327.

It is an arithmetic number, because the mean of its divisors is an integer number (154128118872).

Almost surely, 2^{1231331231022} is an apocalyptic number.

1231331231022 is an abundant number, since it is smaller than the sum of its proper divisors (1234718670930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231331231022 is a wasteful number, since it uses less digits than its factorization.

1231331231022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282286663.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1231331231022 its reverse (2201321331321), we get a palindrome (3432652562343).

The spelling of 1231331231022 in words is "one trillion, two hundred thirty-one billion, three hundred thirty-one million, two hundred thirty-one thousand, twenty-two".