631982473 has 2 divisors, whose sum is σ = 631982474. Its totient is φ = 631982472.

The previous prime is 631982411. The next prime is 631982489. The reversal of 631982473 is 374289136.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 388996729 + 242985744 = 19723^2 + 15588^2 .

It is a cyclic number.

It is not a de Polignac number, because 631982473 - 2¹³ = 631974281 is a prime.

It is not a weakly prime, because it can be changed into another prime (631982173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315991236 + 315991237.

It is an arithmetic number, because the mean of its divisors is an integer number (315991237).

Almost surely, 2^631982473 is an apocalyptic number.

It is an amenable number.

631982473 is a deficient number, since it is larger than the sum of its proper divisors (1).

631982473 is an equidigital number, since it uses as much as digits as its factorization.

631982473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The square root of 631982473 is about 25139.2615842232. The cubic root of 631982473 is about 858.1601522559.

The spelling of 631982473 in words is "six hundred thirty-one million, nine hundred eighty-two thousand, four hundred seventy-three".