23431431043434 has 32 divisors (see below), whose sum is σ = 47707461000000. Its totient is φ = 7670888491904.

The previous prime is 23431431043417. The next prime is 23431431043439. The reversal of 23431431043434 is 43434013413432.

It is a junction number, because it is equal to n+sod(n) for n = 23431431043392 and 23431431043401.

It is not an unprimeable number, because it can be changed into a prime (23431431043439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147165684 + ... + 147324815.

It is an arithmetic number, because the mean of its divisors is an integer number (1490858156250).

Almost surely, 2^{23431431043434} is an apocalyptic number.

23431431043434 is an abundant number, since it is smaller than the sum of its proper divisors (24276029956566).

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

23431431043434 is a wasteful number, since it uses less digits than its factorization.

23431431043434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294490742.

The product of its (nonzero) digits is 497664, while the sum is 39.

Adding to 23431431043434 its reverse (43434013413432), we get a palindrome (66865444456866).

The spelling of 23431431043434 in words is "twenty-three trillion, four hundred thirty-one billion, four hundred thirty-one million, forty-three thousand, four hundred thirty-four".