630131 has 4 divisors (see below), whose sum is σ = 657552. Its totient is φ = 602712.

The previous prime is 630127. The next prime is 630151. The reversal of 630131 is 131036.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 630131 - 2² = 630127 is a prime.

It is a super-2 number, since 2×630131² = 794130154322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630101) 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, 13676 + ... + 13721.

It is an arithmetic number, because the mean of its divisors is an integer number (164388).

2⁶³⁰¹³¹ is an apocalyptic number.

630131 is a deficient number, since it is larger than the sum of its proper divisors (27421).

630131 is a wasteful number, since it uses less digits than its factorization.

630131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27420.

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

The square root of 630131 is about 793.8079112733. The cubic root of 630131 is about 85.7321302795.

Adding to 630131 its reverse (131036), we get a palindrome (761167).

The spelling of 630131 in words is "six hundred thirty thousand, one hundred thirty-one".