2131319 has 2 divisors, whose sum is σ = 2131320. Its totient is φ = 2131318.

The previous prime is 2131291. The next prime is 2131321. The reversal of 2131319 is 9131312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2131319 - 2²⁰ = 1082743 is a prime.

It is a super-2 number, since 2×2131319² = 9085041359522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2131321, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2131319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065659 + 1065660.

It is an arithmetic number, because the mean of its divisors is an integer number (1065660).

2^2131319 is an apocalyptic number.

2131319 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131319 is an equidigital number, since it uses as much as digits as its factorization.

2131319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162, while the sum is 20.

The square root of 2131319 is about 1459.9037639516. The cubic root of 2131319 is about 128.6913881582.

The spelling of 2131319 in words is "two million, one hundred thirty-one thousand, three hundred nineteen".