102431112991 has 2 divisors, whose sum is σ = 102431112992. Its totient is φ = 102431112990.

The previous prime is 102431112961. The next prime is 102431113027. The reversal of 102431112991 is 199211134201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102431112991 - 2¹⁹ = 102430588703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102431112961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51215556495 + 51215556496.

It is an arithmetic number, because the mean of its divisors is an integer number (51215556496).

Almost surely, 2^102431112991 is an apocalyptic number.

102431112991 is a deficient number, since it is larger than the sum of its proper divisors (1).

102431112991 is an equidigital number, since it uses as much as digits as its factorization.

102431112991 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 34.

The spelling of 102431112991 in words is "one hundred two billion, four hundred thirty-one million, one hundred twelve thousand, nine hundred ninety-one".