20232111131 has 2 divisors, whose sum is σ = 20232111132. Its totient is φ = 20232111130.

The previous prime is 20232111127. The next prime is 20232111149. The reversal of 20232111131 is 13111123202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20232111131 - 2² = 20232111127 is a prime.

It is a super-2 number, since 2×20232111131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20232111181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10116055565 + 10116055566.

It is an arithmetic number, because the mean of its divisors is an integer number (10116055566).

Almost surely, 2^20232111131 is an apocalyptic number.

20232111131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20232111131 is an equidigital number, since it uses as much as digits as its factorization.

20232111131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20232111131 its reverse (13111123202), we get a palindrome (33343234333).

The spelling of 20232111131 in words is "twenty billion, two hundred thirty-two million, one hundred eleven thousand, one hundred thirty-one".