23431231244042 has 4 divisors (see below), whose sum is σ = 35146846866066. Its totient is φ = 11715615622020.

The previous prime is 23431231244027. The next prime is 23431231244077. The reversal of 23431231244042 is 24044213213432.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23380619293201 + 50611950841 = 4835351^2 + 224971^2 .

It is a super-2 number, since 2×23431231244042² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23431231243993 and 23431231244011.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5857807811009 + ... + 5857807811012.

Almost surely, 2^{23431231244042} is an apocalyptic number.

23431231244042 is a deficient number, since it is larger than the sum of its proper divisors (11715615622024).

23431231244042 is a wasteful number, since it uses less digits than its factorization.

23431231244042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11715615622023.

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 23431231244042 its reverse (24044213213432), we get a palindrome (47475444457474).

The spelling of 23431231244042 in words is "twenty-three trillion, four hundred thirty-one billion, two hundred thirty-one million, two hundred forty-four thousand, forty-two".