231042745 has 8 divisors (see below), whose sum is σ = 277363584. Its totient is φ = 184759344.

The previous prime is 231042709. The next prime is 231042769. The reversal of 231042745 is 547240132.

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

It is a cyclic number.

It is not a de Polignac number, because 231042745 - 2⁹ = 231042233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6742 + ... + 22528.

It is an arithmetic number, because the mean of its divisors is an integer number (34670448).

Almost surely, 2^231042745 is an apocalyptic number.

It is an amenable number.

231042745 is a deficient number, since it is larger than the sum of its proper divisors (46320839).

231042745 is a wasteful number, since it uses less digits than its factorization.

231042745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18719.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 231042745 is about 15200.0902957844. The cubic root of 231042745 is about 613.6170878727.

Adding to 231042745 its reverse (547240132), we get a palindrome (778282877).

The spelling of 231042745 in words is "two hundred thirty-one million, forty-two thousand, seven hundred forty-five".