2131132391 has 2 divisors, whose sum is σ = 2131132392. Its totient is φ = 2131132390.

The previous prime is 2131132387. The next prime is 2131132411. The reversal of 2131132391 is 1932311312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2131132391 - 2² = 2131132387 is a prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 2131132391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131132301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065566195 + 1065566196.

It is an arithmetic number, because the mean of its divisors is an integer number (1065566196).

Almost surely, 2^2131132391 is an apocalyptic number.

2131132391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131132391 is an equidigital number, since it uses as much as digits as its factorization.

2131132391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 26.

The square root of 2131132391 is about 46164.1894870905. The cubic root of 2131132391 is about 1286.8763216294.

The spelling of 2131132391 in words is "two billion, one hundred thirty-one million, one hundred thirty-two thousand, three hundred ninety-one".