20231311131022 has 4 divisors (see below), whose sum is σ = 30346966696536. Its totient is φ = 10115655565510.

The previous prime is 20231311131013. The next prime is 20231311131043. The reversal of 20231311131022 is 22013111313202.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 20231311130984 and 20231311131002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5057827782754 + ... + 5057827782757.

It is an arithmetic number, because the mean of its divisors is an integer number (7586741674134).

Almost surely, 2^{20231311131022} is an apocalyptic number.

20231311131022 is a deficient number, since it is larger than the sum of its proper divisors (10115655565514).

20231311131022 is a wasteful number, since it uses less digits than its factorization.

20231311131022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10115655565513.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20231311131022 its reverse (22013111313202), we get a palindrome (42244422444224).

The spelling of 20231311131022 in words is "twenty trillion, two hundred thirty-one billion, three hundred eleven million, one hundred thirty-one thousand, twenty-two".