231135423 has 8 divisors (see below), whose sum is σ = 318807600. Its totient is φ = 148776768.

The previous prime is 231135419. The next prime is 231135431. The reversal of 231135423 is 324531132.

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

It is not a de Polignac number, because 231135423 - 2² = 231135419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231135393 and 231135402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231135433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1328278 + ... + 1328451.

It is an arithmetic number, because the mean of its divisors is an integer number (39850950).

Almost surely, 2^231135423 is an apocalyptic number.

231135423 is a deficient number, since it is larger than the sum of its proper divisors (87672177).

231135423 is a wasteful number, since it uses less digits than its factorization.

231135423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656761.

The product of its digits is 2160, while the sum is 24.

The square root of 231135423 is about 15203.1385904359. The cubic root of 231135423 is about 613.6991234895.

Adding to 231135423 its reverse (324531132), we get a palindrome (555666555).

The spelling of 231135423 in words is "two hundred thirty-one million, one hundred thirty-five thousand, four hundred twenty-three".