631130 has 8 divisors (see below), whose sum is σ = 1136052. Its totient is φ = 252448.

The previous prime is 631121. The next prime is 631133. The reversal of 631130 is 31136.

It can be written as a sum of positive squares in 2 ways, for example, as 573049 + 58081 = 757^2 + 241^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (631133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31547 + ... + 31566.

2⁶³¹¹³⁰ is an apocalyptic number.

631130 is a deficient number, since it is larger than the sum of its proper divisors (504922).

631130 is a wasteful number, since it uses less digits than its factorization.

631130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63120.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 631130 is about 794.4369075012. The cubic root of 631130 is about 85.7774124917. Note that the first 3 decimals are identical.

Adding to 631130 its reverse (31136), we get a palindrome (662266).

The spelling of 631130 in words is "six hundred thirty-one thousand, one hundred thirty".