630786231 has 24 divisors (see below), whose sum is σ = 952577360. Its totient is φ = 412540128.

The previous prime is 630786229. The next prime is 630786239. The reversal of 630786231 is 132687036.

It is a happy number.

It is not a de Polignac number, because 630786231 - 2¹ = 630786229 is a prime.

It is a super-2 number, since 2×630786231² = 795782538438370722, which 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 (630786239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71685 + ... + 80001.

Almost surely, 2^630786231 is an apocalyptic number.

630786231 is a deficient number, since it is larger than the sum of its proper divisors (321791129).

630786231 is an equidigital number, since it uses as much as digits as its factorization.

630786231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8432 (or 8373 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 630786231 is about 25115.4580089633. The cubic root of 630786231 is about 857.6183568465.

The spelling of 630786231 in words is "six hundred thirty million, seven hundred eighty-six thousand, two hundred thirty-one".