231342242243131 has 16 divisors (see below), whose sum is σ = 250221230300160. Its totient is φ = 213228646560160.

The previous prime is 231342242243117. The next prime is 231342242243159. The reversal of 231342242243131 is 131342242243132.

It is a cyclic number.

It is not a de Polignac number, because 231342242243131 - 2³⁵ = 231307882504763 is a prime.

It is a super-2 number, since 2×231342242243131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231342242243831) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 344435815 + ... + 345106816.

It is an arithmetic number, because the mean of its divisors is an integer number (15638826893760).

Almost surely, 2^{231342242243131} is an apocalyptic number.

231342242243131 is a deficient number, since it is larger than the sum of its proper divisors (18878988057029).

231342242243131 is a wasteful number, since it uses less digits than its factorization.

231342242243131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689543186.

The product of its digits is 165888, while the sum is 37.

Adding to 231342242243131 its reverse (131342242243132), we get a palindrome (362684484486263).

Subtracting from 231342242243131 its reverse (131342242243132), we obtain a palindrome (99999999999999).

The spelling of 231342242243131 in words is "two hundred thirty-one trillion, three hundred forty-two billion, two hundred forty-two million, two hundred forty-three thousand, one hundred thirty-one".