2131901951 has 2 divisors, whose sum is σ = 2131901952. Its totient is φ = 2131901950.

The previous prime is 2131901923. The next prime is 2131901953. The reversal of 2131901951 is 1591091312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2131901951 - 2³⁰ = 1058160127 is a prime.

Together with 2131901953, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131901953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065950975 + 1065950976.

It is an arithmetic number, because the mean of its divisors is an integer number (1065950976).

Almost surely, 2^2131901951 is an apocalyptic number.

2131901951 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131901951 is an equidigital number, since it uses as much as digits as its factorization.

2131901951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 32.

The square root of 2131901951 is about 46172.5237668464. The cubic root of 2131901951 is about 1287.0312016306.

The spelling of 2131901951 in words is "two billion, one hundred thirty-one million, nine hundred one thousand, nine hundred fifty-one".