23401443013 has 6 divisors (see below), whose sum is σ = 25340024274. Its totient is φ = 21601331856.

The previous prime is 23401443001. The next prime is 23401443017. The reversal of 23401443013 is 31034410432.

It can be written as a sum of positive squares in 3 ways, for example, as 2733930369 + 20667512644 = 52287^2 + 143762^2 .

It is not a de Polignac number, because 23401443013 - 2¹³ = 23401434821 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 (23401443017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69234870 + ... + 69235207.

It is an arithmetic number, because the mean of its divisors is an integer number (4223337379).

Almost surely, 2^23401443013 is an apocalyptic number.

It is an amenable number.

23401443013 is a deficient number, since it is larger than the sum of its proper divisors (1938581261).

23401443013 is a wasteful number, since it uses less digits than its factorization.

23401443013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138470103 (or 138470090 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 23401443013 its reverse (31034410432), we get a palindrome (54435853445).

The spelling of 23401443013 in words is "twenty-three billion, four hundred one million, four hundred forty-three thousand, thirteen".