10318631 has 4 divisors (see below), whose sum is σ = 10325064. Its totient is φ = 10312200.

The previous prime is 10318621. The next prime is 10318639. The reversal of 10318631 is 13681301.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13681301 = 29 ⋅471769.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10318631 is a prime.

It is a super-2 number, since 2×10318631² = 212948291428322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10318597 and 10318606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10318639) 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, 1376 + ... + 4746.

It is an arithmetic number, because the mean of its divisors is an integer number (2581266).

Almost surely, 2^10318631 is an apocalyptic number.

10318631 is a deficient number, since it is larger than the sum of its proper divisors (6433).

10318631 is an equidigital number, since it uses as much as digits as its factorization.

10318631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6432.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 10318631 is about 3212.2625982320. The cubic root of 10318631 is about 217.7078191594.

Adding to 10318631 its reverse (13681301), we get a palindrome (23999932).

The spelling of 10318631 in words is "ten million, three hundred eighteen thousand, six hundred thirty-one".