631263250831 has 8 divisors (see below), whose sum is σ = 674028305280. Its totient is φ = 589774765272.

The previous prime is 631263250789. The next prime is 631263250841. The reversal of 631263250831 is 138052362136.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 631263250831 - 2⁷ = 631263250703 is a prime.

It is a super-2 number, since 2×631263250831² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631263250841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319141201 + ... + 319143178.

It is an arithmetic number, because the mean of its divisors is an integer number (84253538160).

Almost surely, 2^631263250831 is an apocalyptic number.

631263250831 is a deficient number, since it is larger than the sum of its proper divisors (42765054449).

631263250831 is a wasteful number, since it uses less digits than its factorization.

631263250831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638284445.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 631263250831 in words is "six hundred thirty-one billion, two hundred sixty-three million, two hundred fifty thousand, eight hundred thirty-one".