20220231131 has 2 divisors, whose sum is σ = 20220231132. Its totient is φ = 20220231130.

The previous prime is 20220231107. The next prime is 20220231133. The reversal of 20220231131 is 13113202202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20220231131 - 2⁶ = 20220231067 is a prime.

It is a super-2 number, since 2×20220231131² (a number of 21 digits) contains 22 as substring.

Together with 20220231133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20220231133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110115565 + 10110115566.

It is an arithmetic number, because the mean of its divisors is an integer number (10110115566).

Almost surely, 2^20220231131 is an apocalyptic number.

20220231131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220231131 is an equidigital number, since it uses as much as digits as its factorization.

20220231131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20220231131 its reverse (13113202202), we get a palindrome (33333433333).

The spelling of 20220231131 in words is "twenty billion, two hundred twenty million, two hundred thirty-one thousand, one hundred thirty-one".