31359402047 has 2 divisors, whose sum is σ = 31359402048. Its totient is φ = 31359402046.

The previous prime is 31359402037. The next prime is 31359402071. The reversal of 31359402047 is 74020495313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31359402047 - 2⁴ = 31359402031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31359402047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31359402037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15679701023 + 15679701024.

It is an arithmetic number, because the mean of its divisors is an integer number (15679701024).

Almost surely, 2^31359402047 is an apocalyptic number.

31359402047 is a deficient number, since it is larger than the sum of its proper divisors (1).

31359402047 is an equidigital number, since it uses as much as digits as its factorization.

31359402047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 31359402047 in words is "thirty-one billion, three hundred fifty-nine million, four hundred two thousand, forty-seven".