31279947763 has 12 divisors (see below), whose sum is σ = 32417227072. Its totient is φ = 30151157760.

The previous prime is 31279947757. The next prime is 31279947841. The reversal of 31279947763 is 36774997213.

It is not a de Polignac number, because 31279947763 - 2⁵ = 31279947731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31279947698 and 31279947707.

It is not an unprimeable number, because it can be changed into a prime (31279944763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2039881 + ... + 2055157.

Almost surely, 2^31279947763 is an apocalyptic number.

31279947763 is a deficient number, since it is larger than the sum of its proper divisors (1137279309).

31279947763 is an equidigital number, since it uses as much as digits as its factorization.

31279947763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15822 (or 15565 counting only the distinct ones).

The product of its digits is 12002256, while the sum is 58.

The spelling of 31279947763 in words is "thirty-one billion, two hundred seventy-nine million, nine hundred forty-seven thousand, seven hundred sixty-three".