231358461 has 4 divisors (see below), whose sum is σ = 308477952. Its totient is φ = 154238972.

The previous prime is 231358429. The next prime is 231358489. The reversal of 231358461 is 164853132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231358461 - 2⁵ = 231358429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231350461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38559741 + ... + 38559746.

It is an arithmetic number, because the mean of its divisors is an integer number (77119488).

Almost surely, 2^231358461 is an apocalyptic number.

It is an amenable number.

231358461 is a deficient number, since it is larger than the sum of its proper divisors (77119491).

231358461 is an equidigital number, since it uses as much as digits as its factorization.

231358461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77119490.

The product of its digits is 17280, while the sum is 33.

The square root of 231358461 is about 15210.4720834036. The cubic root of 231358461 is about 613.8964597801.

The spelling of 231358461 in words is "two hundred thirty-one million, three hundred fifty-eight thousand, four hundred sixty-one".