231615461 has 16 divisors (see below), whose sum is σ = 290252160. Its totient is φ = 179551680.

The previous prime is 231615413. The next prime is 231615511. The reversal of 231615461 is 164516132.

It is a happy number.

It is not a de Polignac number, because 231615461 - 2¹⁴ = 231599077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231611461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7535 + ... + 22803.

It is an arithmetic number, because the mean of its divisors is an integer number (18140760).

Almost surely, 2^231615461 is an apocalyptic number.

It is an amenable number.

231615461 is a deficient number, since it is larger than the sum of its proper divisors (58636699).

231615461 is a wasteful number, since it uses less digits than its factorization.

231615461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15484.

The product of its digits is 4320, while the sum is 29.

The square root of 231615461 is about 15218.9178656040. The cubic root of 231615461 is about 614.1236872701.

The spelling of 231615461 in words is "two hundred thirty-one million, six hundred fifteen thousand, four hundred sixty-one".