231612453 has 10 divisors (see below), whose sum is σ = 345989094. Its totient is φ = 154408248.

The previous prime is 231612419. The next prime is 231612463. The reversal of 231612453 is 354216132.

231612453 is a `hidden beast` number, since 2 + 3 + 1 + 612 + 45 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 206841924 + 24770529 = 14382^2 + 4977^2 .

It is not a de Polignac number, because 231612453 - 2⁸ = 231612197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231612463) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1429626 + ... + 1429787.

Almost surely, 2^231612453 is an apocalyptic number.

It is an amenable number.

231612453 is a deficient number, since it is larger than the sum of its proper divisors (114376641).

231612453 is an equidigital number, since it uses as much as digits as its factorization.

231612453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859425 (or 2859416 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 231612453 is about 15218.8190409112. The cubic root of 231612453 is about 614.1210287083.

Adding to 231612453 its reverse (354216132), we get a palindrome (585828585).

The spelling of 231612453 in words is "two hundred thirty-one million, six hundred twelve thousand, four hundred fifty-three".