31431012079 has 2 divisors, whose sum is σ = 31431012080. Its totient is φ = 31431012078.

The previous prime is 31431012077. The next prime is 31431012083. The reversal of 31431012079 is 97021013413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31431012079 - 2¹ = 31431012077 is a prime.

Together with 31431012077, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 31431012079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31431012077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15715506039 + 15715506040.

It is an arithmetic number, because the mean of its divisors is an integer number (15715506040).

Almost surely, 2^31431012079 is an apocalyptic number.

31431012079 is a deficient number, since it is larger than the sum of its proper divisors (1).

31431012079 is an equidigital number, since it uses as much as digits as its factorization.

31431012079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 31431012079 in words is "thirty-one billion, four hundred thirty-one million, twelve thousand, seventy-nine".