231331324042 has 32 divisors (see below), whose sum is σ = 445641622272. Its totient is φ = 87536744064.

The previous prime is 231331324033. The next prime is 231331324057. The reversal of 231331324042 is 240423133132.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 231331324042.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27627363 + ... + 27635734.

It is an arithmetic number, because the mean of its divisors is an integer number (13926300696).

Almost surely, 2^231331324042 is an apocalyptic number.

231331324042 is a deficient number, since it is larger than the sum of its proper divisors (214310298230).

231331324042 is a wasteful number, since it uses less digits than its factorization.

231331324042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55263142.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 231331324042 its reverse (240423133132), we get a palindrome (471754457174).

The spelling of 231331324042 in words is "two hundred thirty-one billion, three hundred thirty-one million, three hundred twenty-four thousand, forty-two".