631123 has 8 divisors (see below), whose sum is σ = 676800. Its totient is φ = 586728.

The previous prime is 631121. The next prime is 631133. The reversal of 631123 is 321136.

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

It is a cyclic number.

It is not a de Polignac number, because 631123 - 2¹ = 631121 is a prime.

It is a super-2 number, since 2×631123² = 796632482258, which contains 22 as substring.

It is a Duffinian number.

631123 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 631097 and 631106.

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 7 ways as a sum of consecutive naturals, for example, 840 + ... + 1402.

It is an arithmetic number, because the mean of its divisors is an integer number (84600).

2⁶³¹¹²³ is an apocalyptic number.

631123 is a deficient number, since it is larger than the sum of its proper divisors (45677).

631123 is a wasteful number, since it uses less digits than its factorization.

631123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641.

The product of its digits is 108, while the sum is 16.

The square root of 631123 is about 794.4325018527. The cubic root of 631123 is about 85.7770953653. Note that the first 3 decimals are identical.

Adding to 631123 its reverse (321136), we get a palindrome (952259).

The spelling of 631123 in words is "six hundred thirty-one thousand, one hundred twenty-three".