231858241 has 4 divisors (see below), whose sum is σ = 232009092. Its totient is φ = 231707392.

The previous prime is 231858203. The next prime is 231858247. The reversal of 231858241 is 142858132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99700225 + 132158016 = 9985^2 + 11496^2 .

It is a cyclic number.

It is not a de Polignac number, because 231858241 - 2⁹ = 231857729 is a prime.

It is a super-2 number, since 2×231858241² = 107516487839228162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231858197 and 231858206.

It is not an unprimeable number, because it can be changed into a prime (231858247) 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, 73096 + ... + 76201.

It is an arithmetic number, because the mean of its divisors is an integer number (58002273).

Almost surely, 2^231858241 is an apocalyptic number.

It is an amenable number.

231858241 is a deficient number, since it is larger than the sum of its proper divisors (150851).

231858241 is a wasteful number, since it uses less digits than its factorization.

231858241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150850.

The product of its digits is 15360, while the sum is 34.

The square root of 231858241 is about 15226.8920335044. The cubic root of 231858241 is about 614.3381877527.

The spelling of 231858241 in words is "two hundred thirty-one million, eight hundred fifty-eight thousand, two hundred forty-one".