231612241 has 12 divisors (see below), whose sum is σ = 274148992. Its totient is φ = 191674224.

The previous prime is 231612221. The next prime is 231612259. The reversal of 231612241 is 142216132.

It is a de Polignac number, because none of the positive numbers 2^k-231612241 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 13785 + ... + 25558.

Almost surely, 2^231612241 is an apocalyptic number.

It is an amenable number.

231612241 is a deficient number, since it is larger than the sum of its proper divisors (42536751).

231612241 is an equidigital number, since it uses as much as digits as its factorization.

231612241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39408 (or 39379 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 231612241 is about 15218.8120758488. The cubic root of 231612241 is about 614.1208413354.

Adding to 231612241 its reverse (142216132), we get a palindrome (373828373).

The spelling of 231612241 in words is "two hundred thirty-one million, six hundred twelve thousand, two hundred forty-one".