31403763473 has 2 divisors, whose sum is σ = 31403763474. Its totient is φ = 31403763472.

The previous prime is 31403763449. The next prime is 31403763541. The reversal of 31403763473 is 37436730413.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26867471569 + 4536291904 = 163913^2 + 67352^2 .

It is a cyclic number.

It is not a de Polignac number, because 31403763473 - 2³⁰ = 30330021649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31403763473.

It is not a weakly prime, because it can be changed into another prime (31403763773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15701881736 + 15701881737.

It is an arithmetic number, because the mean of its divisors is an integer number (15701881737).

Almost surely, 2^31403763473 is an apocalyptic number.

It is an amenable number.

31403763473 is a deficient number, since it is larger than the sum of its proper divisors (1).

31403763473 is an equidigital number, since it uses as much as digits as its factorization.

31403763473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 41.

The spelling of 31403763473 in words is "thirty-one billion, four hundred three million, seven hundred sixty-three thousand, four hundred seventy-three".