2391831427 has 2 divisors, whose sum is σ = 2391831428. Its totient is φ = 2391831426.

The previous prime is 2391831401. The next prime is 2391831499. The reversal of 2391831427 is 7241381932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2391831427 - 2²³ = 2383442819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2391831427.

It is not a weakly prime, because it can be changed into another prime (2391835427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1195915713 + 1195915714.

It is an arithmetic number, because the mean of its divisors is an integer number (1195915714).

Almost surely, 2^2391831427 is an apocalyptic number.

2391831427 is a deficient number, since it is larger than the sum of its proper divisors (1).

2391831427 is an equidigital number, since it uses as much as digits as its factorization.

2391831427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 2391831427 is about 48906.3536465355. The cubic root of 2391831427 is about 1337.3451980504.

The spelling of 2391831427 in words is "two billion, three hundred ninety-one million, eight hundred thirty-one thousand, four hundred twenty-seven".