631320770 has 8 divisors (see below), whose sum is σ = 1136377404. Its totient is φ = 252528304.

The previous prime is 631320763. The next prime is 631320773. The reversal of 631320770 is 77023136.

It can be written as a sum of positive squares in 2 ways, for example, as 549761809 + 81558961 = 23447^2 + 9031^2 .

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

It is not an unprimeable number, because it can be changed into a prime (631320773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31566029 + ... + 31566048.

Almost surely, 2^631320770 is an apocalyptic number.

631320770 is a deficient number, since it is larger than the sum of its proper divisors (505056634).

631320770 is a wasteful number, since it uses less digits than its factorization.

631320770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63132084.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 631320770 is about 25126.0973889699. The cubic root of 631320770 is about 857.8605419183.

The spelling of 631320770 in words is "six hundred thirty-one million, three hundred twenty thousand, seven hundred seventy".