631126 has 8 divisors (see below), whose sum is σ = 950904. Its totient is φ = 314160.

The previous prime is 631121. The next prime is 631133. The reversal of 631126 is 621136.

631126 is a nontrivial binomial coefficient, being equal to C(1124, 2).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631121) 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, 1 + ... + 1123.

It is an arithmetic number, because the mean of its divisors is an integer number (118863).

2⁶³¹¹²⁶ is an apocalyptic number.

631126 is the 1123-rd triangular number and also the 562-nd hexagonal number.

631126 is the 375-th centered nonagonal number.

631126 is a deficient number, since it is larger than the sum of its proper divisors (319778).

631126 is a wasteful number, since it uses less digits than its factorization.

631126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406.

The product of its digits is 216, while the sum is 19.

The square root of 631126 is about 794.4343899908. The cubic root of 631126 is about 85.7772312769. Note that the first 3 decimals are identical.

It can be divided in two parts, 631 and 126, that added together give a palindrome (757).

The spelling of 631126 in words is "six hundred thirty-one thousand, one hundred twenty-six".