231134605 has 32 divisors (see below), whose sum is σ = 310238208. Its totient is φ = 164160000.

The previous prime is 231134599. The next prime is 231134623. The reversal of 231134605 is 506431132.

It is not a de Polignac number, because 231134605 - 2⁵ = 231134573 is a prime.

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 231134605.

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, 505537 + ... + 505993.

It is an arithmetic number, because the mean of its divisors is an integer number (9694944).

Almost surely, 2^231134605 is an apocalyptic number.

It is an amenable number.

231134605 is a deficient number, since it is larger than the sum of its proper divisors (79103603).

231134605 is a wasteful number, since it uses less digits than its factorization.

231134605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 231134605 is about 15203.1116880723. Note that the first 3 decimals coincide. The cubic root of 231134605 is about 613.6983995178.

Adding to 231134605 its reverse (506431132), we get a palindrome (737565737).

The spelling of 231134605 in words is "two hundred thirty-one million, one hundred thirty-four thousand, six hundred five".