231666245 has 8 divisors (see below), whose sum is σ = 278467200. Its totient is φ = 185021200.

The previous prime is 231666229. The next prime is 231666257. The reversal of 231666245 is 542666132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231666245 - 2⁴ = 231666229 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35681 + ... + 41670.

It is an arithmetic number, because the mean of its divisors is an integer number (34808400).

Almost surely, 2^231666245 is an apocalyptic number.

It is an amenable number.

231666245 is a deficient number, since it is larger than the sum of its proper divisors (46800955).

231666245 is an equidigital number, since it uses as much as digits as its factorization.

231666245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77955.

The product of its digits is 51840, while the sum is 35.

The square root of 231666245 is about 15220.5862239271. The cubic root of 231666245 is about 614.1685682380.

The spelling of 231666245 in words is "two hundred thirty-one million, six hundred sixty-six thousand, two hundred forty-five".