2131323233111 has 2 divisors, whose sum is σ = 2131323233112. Its totient is φ = 2131323233110.

The previous prime is 2131323233021. The next prime is 2131323233173. The reversal of 2131323233111 is 1113323231312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2131323233111 - 2³⁸ = 1856445326167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131323233311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065661616555 + 1065661616556.

It is an arithmetic number, because the mean of its divisors is an integer number (1065661616556).

Almost surely, 2^{2131323233111} is an apocalyptic number.

2131323233111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131323233111 is an equidigital number, since it uses as much as digits as its factorization.

2131323233111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 26.

Adding to 2131323233111 its reverse (1113323231312), we get a palindrome (3244646464423).

The spelling of 2131323233111 in words is "two trillion, one hundred thirty-one billion, three hundred twenty-three million, two hundred thirty-three thousand, one hundred eleven".