2131311434129 has 2 divisors, whose sum is σ = 2131311434130. Its totient is φ = 2131311434128.

The previous prime is 2131311434101. The next prime is 2131311434159. The reversal of 2131311434129 is 9214341131312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2023583065729 + 107728368400 = 1422527^2 + 328220^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131311434129 - 2⁴⁰ = 1031799806353 is a prime.

It is not a weakly prime, because it can be changed into another prime (2131311434159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065655717064 + 1065655717065.

It is an arithmetic number, because the mean of its divisors is an integer number (1065655717065).

Almost surely, 2^{2131311434129} is an apocalyptic number.

It is an amenable number.

2131311434129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131311434129 is an equidigital number, since it uses as much as digits as its factorization.

2131311434129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 35.

The spelling of 2131311434129 in words is "two trillion, one hundred thirty-one billion, three hundred eleven million, four hundred thirty-four thousand, one hundred twenty-nine".