231135043 has 4 divisors (see below), whose sum is σ = 244731240. Its totient is φ = 217538848.

The previous prime is 231135031. The next prime is 231135071. The reversal of 231135043 is 340531132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231135043 - 2⁵ = 231135011 is a prime.

It is a super-2 number, since 2×231135043² = 106846816205223698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231135013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6798073 + ... + 6798106.

It is an arithmetic number, because the mean of its divisors is an integer number (61182810).

Almost surely, 2^231135043 is an apocalyptic number.

231135043 is a deficient number, since it is larger than the sum of its proper divisors (13596197).

231135043 is a wasteful number, since it uses less digits than its factorization.

231135043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13596196.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 231135043 is about 15203.1260930113. The cubic root of 231135043 is about 613.6987871703.

Adding to 231135043 its reverse (340531132), we get a palindrome (571666175).

The spelling of 231135043 in words is "two hundred thirty-one million, one hundred thirty-five thousand, forty-three".