31434332491 has 2 divisors, whose sum is σ = 31434332492. Its totient is φ = 31434332490.

The previous prime is 31434332453. The next prime is 31434332519. The reversal of 31434332491 is 19423343413.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31434332491 - 2³³ = 22844397899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31434332491.

It is not a weakly prime, because it can be changed into another prime (31434332191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15717166245 + 15717166246.

It is an arithmetic number, because the mean of its divisors is an integer number (15717166246).

Almost surely, 2^31434332491 is an apocalyptic number.

31434332491 is a deficient number, since it is larger than the sum of its proper divisors (1).

31434332491 is an equidigital number, since it uses as much as digits as its factorization.

31434332491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 37.

The spelling of 31434332491 in words is "thirty-one billion, four hundred thirty-four million, three hundred thirty-two thousand, four hundred ninety-one".