481751631 has 28 divisors (see below), whose sum is σ = 760334520. Its totient is φ = 304255440.

The previous prime is 481751623. The next prime is 481751653. The reversal of 481751631 is 136157184.

481751631 is a `hidden beast` number, since 4 + 8 + 17 + 5 + 1 + 631 = 666.

It is not a de Polignac number, because 481751631 - 2³ = 481751623 is a prime.

It is a super-2 number, since 2×481751631² = 464169267942320322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481751531) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 3540 + ... + 31241.

Almost surely, 2^481751631 is an apocalyptic number.

481751631 is a deficient number, since it is larger than the sum of its proper divisors (278582889).

481751631 is an equidigital number, since it uses as much as digits as its factorization.

481751631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34818 (or 34803 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 481751631 is about 21948.8412222605. The cubic root of 481751631 is about 783.9247892024.

The spelling of 481751631 in words is "four hundred eighty-one million, seven hundred fifty-one thousand, six hundred thirty-one".