231300312491 has 2 divisors, whose sum is σ = 231300312492. Its totient is φ = 231300312490.

The previous prime is 231300312473. The next prime is 231300312511. The reversal of 231300312491 is 194213003132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231300312491 - 2³⁴ = 214120443307 is a prime.

It is not a weakly prime, because it can be changed into another prime (231300312401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115650156245 + 115650156246.

It is an arithmetic number, because the mean of its divisors is an integer number (115650156246).

Almost surely, 2^231300312491 is an apocalyptic number.

231300312491 is a deficient number, since it is larger than the sum of its proper divisors (1).

231300312491 is an equidigital number, since it uses as much as digits as its factorization.

231300312491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 231300312491 in words is "two hundred thirty-one billion, three hundred million, three hundred twelve thousand, four hundred ninety-one".