31246496789 has 2 divisors, whose sum is σ = 31246496790. Its totient is φ = 31246496788.

The previous prime is 31246496783. The next prime is 31246496923. The reversal of 31246496789 is 98769464213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30944328100 + 302168689 = 175910^2 + 17383^2 .

It is a cyclic number.

It is not a de Polignac number, because 31246496789 - 2⁴ = 31246496773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31246496783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15623248394 + 15623248395.

It is an arithmetic number, because the mean of its divisors is an integer number (15623248395).

Almost surely, 2^31246496789 is an apocalyptic number.

It is an amenable number.

31246496789 is a deficient number, since it is larger than the sum of its proper divisors (1).

31246496789 is an equidigital number, since it uses as much as digits as its factorization.

31246496789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15676416, while the sum is 59.

The spelling of 31246496789 in words is "thirty-one billion, two hundred forty-six million, four hundred ninety-six thousand, seven hundred eighty-nine".