23431421344013 has 8 divisors (see below), whose sum is σ = 24818497706808. Its totient is φ = 22045318032384.

The previous prime is 23431421343929. The next prime is 23431421344057. The reversal of 23431421344013 is 31044312413432.

It can be written as a sum of positive squares in 4 ways, for example, as 11420053733449 + 12011367610564 = 3379357^2 + 3465742^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23431421344013 - 2¹² = 23431421339917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23431421344073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243213206 + ... + 243309527.

It is an arithmetic number, because the mean of its divisors is an integer number (3102312213351).

Almost surely, 2^{23431421344013} is an apocalyptic number.

It is an amenable number.

23431421344013 is a deficient number, since it is larger than the sum of its proper divisors (1387076362795).

23431421344013 is a wasteful number, since it uses less digits than its factorization.

23431421344013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486525583.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 23431421344013 its reverse (31044312413432), we get a palindrome (54475733757445).

The spelling of 23431421344013 in words is "twenty-three trillion, four hundred thirty-one billion, four hundred twenty-one million, three hundred forty-four thousand, thirteen".