631308273 has 16 divisors (see below), whose sum is σ = 869916672. Its totient is φ = 406818000.

The previous prime is 631308253. The next prime is 631308341. The reversal of 631308273 is 372803136.

It is a de Polignac number, because none of the positive numbers 2^k-631308273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (631308253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86808 + ... + 93798.

It is an arithmetic number, because the mean of its divisors is an integer number (54369792).

Almost surely, 2^631308273 is an apocalyptic number.

It is an amenable number.

631308273 is a deficient number, since it is larger than the sum of its proper divisors (238608399).

631308273 is a wasteful number, since it uses less digits than its factorization.

631308273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7996.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 631308273 is about 25125.8487020837. The cubic root of 631308273 is about 857.8548814287.

The spelling of 631308273 in words is "six hundred thirty-one million, three hundred eight thousand, two hundred seventy-three".