231373430026242 has 64 divisors (see below), whose sum is σ = 529851635309568. Its totient is φ = 65981965608000.

The previous prime is 231373430026213. The next prime is 231373430026243. The reversal of 231373430026242 is 242620034373132.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 231373430026194 and 231373430026203.

It is not an unprimeable number, because it can be changed into a prime (231373430026243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177079692 + ... + 178381512.

It is an arithmetic number, because the mean of its divisors is an integer number (8278931801712).

Almost surely, 2^{231373430026242} is an apocalyptic number.

231373430026242 is an abundant number, since it is smaller than the sum of its proper divisors (298478205283326).

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

231373430026242 is a wasteful number, since it uses less digits than its factorization.

231373430026242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309815.

The product of its (nonzero) digits is 870912, while the sum is 42.

Adding to 231373430026242 its reverse (242620034373132), we get a palindrome (473993464399374).

The spelling of 231373430026242 in words is "two hundred thirty-one trillion, three hundred seventy-three billion, four hundred thirty million, twenty-six thousand, two hundred forty-two".