2131242913 has 2 divisors, whose sum is σ = 2131242914. Its totient is φ = 2131242912.

The previous prime is 2131242877. The next prime is 2131242917. The reversal of 2131242913 is 3192421312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1801747809 + 329495104 = 42447^2 + 18152^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131242913 - 2²⁹ = 1594372001 is a prime.

It is not a weakly prime, because it can be changed into another prime (2131242917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065621456 + 1065621457.

It is an arithmetic number, because the mean of its divisors is an integer number (1065621457).

Almost surely, 2^2131242913 is an apocalyptic number.

It is an amenable number.

2131242913 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131242913 is an equidigital number, since it uses as much as digits as its factorization.

2131242913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 2131242913 is about 46165.3865249713. The cubic root of 2131242913 is about 1286.8985673436.

The spelling of 2131242913 in words is "two billion, one hundred thirty-one million, two hundred forty-two thousand, nine hundred thirteen".