231041142 has 24 divisors (see below), whose sum is σ = 501348744. Its totient is φ = 76896864.

The previous prime is 231041123. The next prime is 231041149. The reversal of 231041142 is 241140132.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231041149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2898 + ... + 21690.

It is an arithmetic number, because the mean of its divisors is an integer number (20889531).

Almost surely, 2^231041142 is an apocalyptic number.

231041142 is an abundant number, since it is smaller than the sum of its proper divisors (270307602).

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

231041142 is a wasteful number, since it uses less digits than its factorization.

231041142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19484 (or 19481 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 231041142 is about 15200.0375657431. The cubic root of 231041142 is about 613.6156687551.

Adding to 231041142 its reverse (241140132), we get a palindrome (472181274).

The spelling of 231041142 in words is "two hundred thirty-one million, forty-one thousand, one hundred forty-two".