670631331 has 8 divisors (see below), whose sum is σ = 894297280. Its totient is φ = 447026472.

The previous prime is 670631323. The next prime is 670631333. The reversal of 670631331 is 133136076.

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

It is not a de Polignac number, because 670631331 - 2³ = 670631323 is a prime.

It is a super-2 number, since 2×670631331² = 899492764237663122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670631333) 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, 27300 + ... + 45678.

It is an arithmetic number, because the mean of its divisors is an integer number (111787160).

Almost surely, 2^670631331 is an apocalyptic number.

670631331 is a deficient number, since it is larger than the sum of its proper divisors (223665949).

670631331 is a wasteful number, since it uses less digits than its factorization.

670631331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30545.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 670631331 is about 25896.5505618026. The cubic root of 670631331 is about 875.3087698313.

The spelling of 670631331 in words is "six hundred seventy million, six hundred thirty-one thousand, three hundred thirty-one".