220113231 has 16 divisors (see below), whose sum is σ = 319019904. Its totient is φ = 134185824.

The previous prime is 220113221. The next prime is 220113241. The reversal of 220113231 is 132311022.

It is an interprime number because it is at equal distance from previous prime (220113221) and next prime (220113241).

It is not a de Polignac number, because 220113231 - 2⁵ = 220113199 is a prime.

It is a super-2 number, since 2×220113231² = 96899668922518722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220113231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220113221) 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, 22201 + ... + 30546.

It is an arithmetic number, because the mean of its divisors is an integer number (19938744).

Almost surely, 2^220113231 is an apocalyptic number.

220113231 is a deficient number, since it is larger than the sum of its proper divisors (98906673).

220113231 is a wasteful number, since it uses less digits than its factorization.

220113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52870.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 220113231 is about 14836.2134994075. The cubic root of 220113231 is about 603.7846247219.

Adding to 220113231 its reverse (132311022), we get a palindrome (352424253).

The spelling of 220113231 in words is "two hundred twenty million, one hundred thirteen thousand, two hundred thirty-one".