231135045 has 32 divisors (see below), whose sum is σ = 375196800. Its totient is φ = 121492224.

The previous prime is 231135031. The next prime is 231135071. The reversal of 231135045 is 540531132.

It is not a de Polignac number, because 231135045 - 2⁵ = 231135013 is a prime.

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, 609666 + ... + 610044.

It is an arithmetic number, because the mean of its divisors is an integer number (11724900).

Almost surely, 2^231135045 is an apocalyptic number.

It is an amenable number.

231135045 is a deficient number, since it is larger than the sum of its proper divisors (144061755).

231135045 is a wasteful number, since it uses less digits than its factorization.

231135045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 231135045 is about 15203.1261587872. The cubic root of 231135045 is about 613.6987889404.

Adding to 231135045 its reverse (540531132), we get a palindrome (771666177).

The spelling of 231135045 in words is "two hundred thirty-one million, one hundred thirty-five thousand, forty-five".