231251245 has 4 divisors (see below), whose sum is σ = 277501500. Its totient is φ = 185000992.

The previous prime is 231251231. The next prime is 231251257. The reversal of 231251245 is 542152132.

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 158080329 + 73170916 = 12573^2 + 8554^2 .

It is a cyclic number.

It is not a de Polignac number, because 231251245 - 2⁷ = 231251117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23125120 + ... + 23125129.

It is an arithmetic number, because the mean of its divisors is an integer number (69375375).

Almost surely, 2^231251245 is an apocalyptic number.

It is an amenable number.

231251245 is a deficient number, since it is larger than the sum of its proper divisors (46250255).

231251245 is an equidigital number, since it uses as much as digits as its factorization.

231251245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46250254.

The product of its digits is 2400, while the sum is 25.

The square root of 231251245 is about 15206.9472610383. The cubic root of 231251245 is about 613.8016146172.

The spelling of 231251245 in words is "two hundred thirty-one million, two hundred fifty-one thousand, two hundred forty-five".