231242142443502 has 16 divisors (see below), whose sum is σ = 462845883248640. Its totient is φ = 77020447754232.

The previous prime is 231242142443423. The next prime is 231242142443567. The reversal of 231242142443502 is 205344241242132.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15066590088 + ... + 15066605435.

It is an arithmetic number, because the mean of its divisors is an integer number (28927867703040).

Almost surely, 2^{231242142443502} is an apocalyptic number.

231242142443502 is an abundant number, since it is smaller than the sum of its proper divisors (231603740805138).

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

231242142443502 is a wasteful number, since it uses less digits than its factorization.

231242142443502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30133196807.

The product of its (nonzero) digits is 368640, while the sum is 39.

Adding to 231242142443502 its reverse (205344241242132), we get a palindrome (436586383685634).

The spelling of 231242142443502 in words is "two hundred thirty-one trillion, two hundred forty-two billion, one hundred forty-two million, four hundred forty-three thousand, five hundred two".