231623042 has 16 divisors (see below), whose sum is σ = 399600960. Its totient is φ = 98633808.

The previous prime is 231623027. The next prime is 231623047. The reversal of 231623042 is 240326132.

It is a junction number, because it is equal to n+sod(n) for n = 231622999 and 231623017.

It is not an unprimeable number, because it can be changed into a prime (231623047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50492 + ... + 54887.

It is an arithmetic number, because the mean of its divisors is an integer number (24975060).

Almost surely, 2^231623042 is an apocalyptic number.

231623042 is a deficient number, since it is larger than the sum of its proper divisors (167977918).

231623042 is a wasteful number, since it uses less digits than its factorization.

231623042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105545.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 231623042 is about 15219.1669285806. The cubic root of 231623042 is about 614.1303874861.

Adding to 231623042 its reverse (240326132), we get a palindrome (471949174).

The spelling of 231623042 in words is "two hundred thirty-one million, six hundred twenty-three thousand, forty-two".