630731139 has 8 divisors (see below), whose sum is σ = 877539072. Its totient is φ = 402205320.

The previous prime is 630731131. The next prime is 630731147. The reversal of 630731139 is 931137036.

It is an interprime number because it is at equal distance from previous prime (630731131) and next prime (630731147).

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

It is not a de Polignac number, because 630731139 - 2³ = 630731131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (630731131) 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, 4570447 + ... + 4570584.

It is an arithmetic number, because the mean of its divisors is an integer number (109692384).

Almost surely, 2^630731139 is an apocalyptic number.

630731139 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

630731139 is a deficient number, since it is larger than the sum of its proper divisors (246807933).

630731139 is a wasteful number, since it uses less digits than its factorization.

630731139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9141057.

The product of its (nonzero) digits is 10206, while the sum is 33.

The square root of 630731139 is about 25114.3612102717. The cubic root of 630731139 is about 857.5933883845.

The spelling of 630731139 in words is "six hundred thirty million, seven hundred thirty-one thousand, one hundred thirty-nine".