220431315 has 16 divisors (see below), whose sum is σ = 379820448. Its totient is φ = 108519936.

The previous prime is 220431313. The next prime is 220431329. The reversal of 220431315 is 513134022.

220431315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220431315 - 2¹ = 220431313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220431291 and 220431300.

It is not an unprimeable number, because it can be changed into a prime (220431313) 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, 565014 + ... + 565403.

It is an arithmetic number, because the mean of its divisors is an integer number (23738778).

Almost surely, 2^220431315 is an apocalyptic number.

220431315 is a deficient number, since it is larger than the sum of its proper divisors (159389133).

220431315 is a wasteful number, since it uses less digits than its factorization.

220431315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130438.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 220431315 is about 14846.9294805357. The cubic root of 220431315 is about 604.0753262998.

Adding to 220431315 its reverse (513134022), we get a palindrome (733565337).

The spelling of 220431315 in words is "two hundred twenty million, four hundred thirty-one thousand, three hundred fifteen".