2131896287 has 2 divisors, whose sum is σ = 2131896288. Its totient is φ = 2131896286.

The previous prime is 2131896281. The next prime is 2131896313. The reversal of 2131896287 is 7826981312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2131896287 - 2⁶ = 2131896223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131896281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065948143 + 1065948144.

It is an arithmetic number, because the mean of its divisors is an integer number (1065948144).

Almost surely, 2^2131896287 is an apocalyptic number.

2131896287 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131896287 is an equidigital number, since it uses as much as digits as its factorization.

2131896287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 2131896287 is about 46172.4624316269. The cubic root of 2131896287 is about 1287.0300618422.

The spelling of 2131896287 in words is "two billion, one hundred thirty-one million, eight hundred ninety-six thousand, two hundred eighty-seven".