23240333404021 has 4 divisors (see below), whose sum is σ = 23259684224044. Its totient is φ = 23220982584000.

The previous prime is 23240333403997. The next prime is 23240333404103. The reversal of 23240333404021 is 12040433304232.

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 2 ways, for example, as 11963027655121 + 11277305748900 = 3458761^2 + 3358170^2 .

It is a cyclic number.

It is not a de Polignac number, because 23240333404021 - 2³⁹ = 22690577590133 is a prime.

It is a super-2 number, since 2×23240333404021² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23240333404621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9675408210 + ... + 9675410611.

It is an arithmetic number, because the mean of its divisors is an integer number (5814921056011).

Almost surely, 2^{23240333404021} is an apocalyptic number.

It is an amenable number.

23240333404021 is a deficient number, since it is larger than the sum of its proper divisors (19350820023).

23240333404021 is a wasteful number, since it uses less digits than its factorization.

23240333404021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19350820022.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 23240333404021 its reverse (12040433304232), we get a palindrome (35280766708253).

The spelling of 23240333404021 in words is "twenty-three trillion, two hundred forty billion, three hundred thirty-three million, four hundred four thousand, twenty-one".