23239403213 has 8 divisors (see below), whose sum is σ = 25033221528. Its totient is φ = 21446466624.

The previous prime is 23239403207. The next prime is 23239403221. The reversal of 23239403213 is 31230493232.

It can be written as a sum of positive squares in 4 ways, for example, as 740003209 + 22499400004 = 27203^2 + 149998^2 .

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 23239403213 - 2¹⁶ = 23239337677 is a prime.

It is a super-3 number, since 3×23239403213³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23239403213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23239403263) 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, 165170 + ... + 271587.

It is an arithmetic number, because the mean of its divisors is an integer number (3129152691).

Almost surely, 2^23239403213 is an apocalyptic number.

It is an amenable number.

23239403213 is a deficient number, since it is larger than the sum of its proper divisors (1793818315).

23239403213 is a wasteful number, since it uses less digits than its factorization.

23239403213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440863.

The product of its (nonzero) digits is 23328, while the sum is 32.

Adding to 23239403213 its reverse (31230493232), we get a palindrome (54469896445).

The spelling of 23239403213 in words is "twenty-three billion, two hundred thirty-nine million, four hundred three thousand, two hundred thirteen".