2091372631 has 2 divisors, whose sum is σ = 2091372632. Its totient is φ = 2091372630.

The previous prime is 2091372551. The next prime is 2091372659. The reversal of 2091372631 is 1362731902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2091372631 - 2²⁹ = 1554501719 is a prime.

It is a super-2 number, since 2×2091372631² = 8747678963391724322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2091372131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045686315 + 1045686316.

It is an arithmetic number, because the mean of its divisors is an integer number (1045686316).

Almost surely, 2^2091372631 is an apocalyptic number.

2091372631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2091372631 is an equidigital number, since it uses as much as digits as its factorization.

2091372631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 2091372631 is about 45731.5277571174. The cubic root of 2091372631 is about 1278.8231025989.

The spelling of 2091372631 in words is "two billion, ninety-one million, three hundred seventy-two thousand, six hundred thirty-one".