10218131 has 16 divisors (see below), whose sum is σ = 12849408. Its totient is φ = 7893600.

The previous prime is 10218119. The next prime is 10218149. The reversal of 10218131 is 13181201.

It is a de Polignac number, because none of the positive numbers 2^k-10218131 is a prime.

It is a super-2 number, since 2×10218131² = 208820402266322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10218101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9581 + ... + 10593.

It is an arithmetic number, because the mean of its divisors is an integer number (803088).

Almost surely, 2^10218131 is an apocalyptic number.

10218131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10218131 is a deficient number, since it is larger than the sum of its proper divisors (2631277).

10218131 is a wasteful number, since it uses less digits than its factorization.

10218131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 10218131 is about 3196.5811424082. The cubic root of 10218131 is about 216.9987116518.

Adding to 10218131 its reverse (13181201), we get a palindrome (23399332).

The spelling of 10218131 in words is "ten million, two hundred eighteen thousand, one hundred thirty-one".