23331143405513 has 16 divisors (see below), whose sum is σ = 24191150236560. Its totient is φ = 22474846464000.

The previous prime is 23331143405497. The next prime is 23331143405597. The reversal of 23331143405513 is 31550434113332.

It can be written as a sum of positive squares in 8 ways, for example, as 6950562777664 + 16380580627849 = 2636392^2 + 4047293^2 .

It is a cyclic number.

It is not a de Polignac number, because 23331143405513 - 2⁴ = 23331143405497 is a prime.

It is a super-2 number, since 2×23331143405513² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23331143405113) 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, 126089363 + ... + 126274263.

It is an arithmetic number, because the mean of its divisors is an integer number (1511946889785).

Almost surely, 2^{23331143405513} is an apocalyptic number.

It is an amenable number.

23331143405513 is a deficient number, since it is larger than the sum of its proper divisors (860006831047).

23331143405513 is a wasteful number, since it uses less digits than its factorization.

23331143405513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194908.

The product of its (nonzero) digits is 194400, while the sum is 38.

Adding to 23331143405513 its reverse (31550434113332), we get a palindrome (54881577518845).

The spelling of 23331143405513 in words is "twenty-three trillion, three hundred thirty-one billion, one hundred forty-three million, four hundred five thousand, five hundred thirteen".