2131023309133 has 2 divisors, whose sum is σ = 2131023309134. Its totient is φ = 2131023309132.

The previous prime is 2131023309113. The next prime is 2131023309139. The reversal of 2131023309133 is 3319033201312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1415961963364 + 715061345769 = 1189942^2 + 845613^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131023309133 - 2⁹ = 2131023308621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2131023309095 and 2131023309104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131023309139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065511654566 + 1065511654567.

It is an arithmetic number, because the mean of its divisors is an integer number (1065511654567).

Almost surely, 2^{2131023309133} is an apocalyptic number.

It is an amenable number.

2131023309133 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131023309133 is an equidigital number, since it uses as much as digits as its factorization.

2131023309133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 31.

The spelling of 2131023309133 in words is "two trillion, one hundred thirty-one billion, twenty-three million, three hundred nine thousand, one hundred thirty-three".