201231102012131 has 2 divisors, whose sum is σ = 201231102012132. Its totient is φ = 201231102012130.

The previous prime is 201231102012103. The next prime is 201231102012133. The reversal of 201231102012131 is 131210201132102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201231102012131 - 2³⁸ = 200956224105187 is a prime.

It is a super-2 number, since 2×201231102012131² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 201231102012133, 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 (201231102012133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100615551006065 + 100615551006066.

It is an arithmetic number, because the mean of its divisors is an integer number (100615551006066).

Almost surely, 2^{201231102012131} is an apocalyptic number.

201231102012131 is a deficient number, since it is larger than the sum of its proper divisors (1).

201231102012131 is an equidigital number, since it uses as much as digits as its factorization.

201231102012131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 201231102012131 its reverse (131210201132102), we get a palindrome (332441303144233).

The spelling of 201231102012131 in words is "two hundred one trillion, two hundred thirty-one billion, one hundred two million, twelve thousand, one hundred thirty-one".