231336642 has 16 divisors (see below), whose sum is σ = 463079232. Its totient is φ = 77044560.

The previous prime is 231336619. The next prime is 231336659. The reversal of 231336642 is 246633132.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9238 + ... + 23409.

It is an arithmetic number, because the mean of its divisors is an integer number (28942452).

Almost surely, 2^231336642 is an apocalyptic number.

231336642 is an abundant number, since it is smaller than the sum of its proper divisors (231742590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231336642 is a wasteful number, since it uses less digits than its factorization.

231336642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33833.

The product of its digits is 15552, while the sum is 30.

The square root of 231336642 is about 15209.7548303712. The cubic root of 231336642 is about 613.8771606834.

Adding to 231336642 its reverse (246633132), we get a palindrome (477969774).

The spelling of 231336642 in words is "two hundred thirty-one million, three hundred thirty-six thousand, six hundred forty-two".