231042245 has 32 divisors (see below), whose sum is σ = 339614208. Its totient is φ = 147426048.

The previous prime is 231042233. The next prime is 231042269. The reversal of 231042245 is 542240132.

It is a happy number.

It is not a de Polignac number, because 231042245 - 2⁶ = 231042181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231042245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25907 + ... + 33663.

It is an arithmetic number, because the mean of its divisors is an integer number (10612944).

Almost surely, 2^231042245 is an apocalyptic number.

It is an amenable number.

231042245 is a deficient number, since it is larger than the sum of its proper divisors (108571963).

231042245 is a wasteful number, since it uses less digits than its factorization.

231042245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7829.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 231042245 is about 15200.0738485048. The cubic root of 231042245 is about 613.6166452291.

Adding to 231042245 its reverse (542240132), we get a palindrome (773282377).

The spelling of 231042245 in words is "two hundred thirty-one million, forty-two thousand, two hundred forty-five".