231135442 has 8 divisors (see below), whose sum is σ = 357887232. Its totient is φ = 111839700.

The previous prime is 231135433. The next prime is 231135469. The reversal of 231135442 is 244531132.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1863934 + ... + 1864057.

It is an arithmetic number, because the mean of its divisors is an integer number (44735904).

Almost surely, 2^231135442 is an apocalyptic number.

231135442 is a deficient number, since it is larger than the sum of its proper divisors (126751790).

231135442 is a wasteful number, since it uses less digits than its factorization.

231135442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3728024.

The product of its digits is 2880, while the sum is 25.

The square root of 231135442 is about 15203.1392153068. The cubic root of 231135442 is about 613.6991403054.

Adding to 231135442 its reverse (244531132), we get a palindrome (475666574).

The spelling of 231135442 in words is "two hundred thirty-one million, one hundred thirty-five thousand, four hundred forty-two".