220315131 has 12 divisors (see below), whose sum is σ = 326834352. Its totient is φ = 142906896.

The previous prime is 220315079. The next prime is 220315133. The reversal of 220315131 is 131513022.

220315131 is a `hidden beast` number, since 220 + 315 + 131 = 666.

It is not a de Polignac number, because 220315131 - 2⁷ = 220315003 is a prime.

It is a super-2 number, since 2×220315131² = 97077513895094322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220315133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 330471 + ... + 331136.

It is an arithmetic number, because the mean of its divisors is an integer number (27236196).

Almost surely, 2^220315131 is an apocalyptic number.

220315131 is a deficient number, since it is larger than the sum of its proper divisors (106519221).

220315131 is a wasteful number, since it uses less digits than its factorization.

220315131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661650 (or 661647 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 220315131 is about 14843.0162366010. The cubic root of 220315131 is about 603.9691764967.

Adding to 220315131 its reverse (131513022), we get a palindrome (351828153).

The spelling of 220315131 in words is "two hundred twenty million, three hundred fifteen thousand, one hundred thirty-one".