231612227 has 16 divisors (see below), whose sum is σ = 290449152. Its totient is φ = 179423520.

The previous prime is 231612221. The next prime is 231612259. The reversal of 231612227 is 722216132.

It is a cyclic number.

It is not a de Polignac number, because 231612227 - 2¹⁰ = 231611203 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231612196 and 231612205.

It is not an unprimeable number, because it can be changed into a prime (231612221) 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, 4628 + ... + 22014.

It is an arithmetic number, because the mean of its divisors is an integer number (18153072).

Almost surely, 2^231612227 is an apocalyptic number.

231612227 is a deficient number, since it is larger than the sum of its proper divisors (58836925).

231612227 is a wasteful number, since it uses less digits than its factorization.

231612227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17578.

The product of its digits is 2016, while the sum is 26.

The square root of 231612227 is about 15218.8116158917. The cubic root of 231612227 is about 614.1208289617.

Adding to 231612227 its reverse (722216132), we get a palindrome (953828359).

The spelling of 231612227 in words is "two hundred thirty-one million, six hundred twelve thousand, two hundred twenty-seven".