231112542 has 64 divisors (see below), whose sum is σ = 513216000. Its totient is φ = 69084288.

The previous prime is 231112537. The next prime is 231112549. The reversal of 231112542 is 245211132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231112549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174559 + ... + 175877.

It is an arithmetic number, because the mean of its divisors is an integer number (8019000).

Almost surely, 2^231112542 is an apocalyptic number.

231112542 is an abundant number, since it is smaller than the sum of its proper divisors (282103458).

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

231112542 is a wasteful number, since it uses less digits than its factorization.

231112542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425.

The product of its digits is 480, while the sum is 21.

The square root of 231112542 is about 15202.3860627205. The cubic root of 231112542 is about 613.6788719953.

Adding to 231112542 its reverse (245211132), we get a palindrome (476323674).

The spelling of 231112542 in words is "two hundred thirty-one million, one hundred twelve thousand, five hundred forty-two".