2313131287 has 2 divisors, whose sum is σ = 2313131288. Its totient is φ = 2313131286.

The previous prime is 2313131281. The next prime is 2313131329. The reversal of 2313131287 is 7821313132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2313131287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2313131281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156565643 + 1156565644.

It is an arithmetic number, because the mean of its divisors is an integer number (1156565644).

Almost surely, 2^2313131287 is an apocalyptic number.

2313131287 is a deficient number, since it is larger than the sum of its proper divisors (1).

2313131287 is an equidigital number, since it uses as much as digits as its factorization.

2313131287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 2313131287 is about 48095.0235159523. The cubic root of 2313131287 is about 1322.5134401384.

The spelling of 2313131287 in words is "two billion, three hundred thirteen million, one hundred thirty-one thousand, two hundred eighty-seven".