23240242213 has 4 divisors (see below), whose sum is σ = 23501368620. Its totient is φ = 22979115808.

The previous prime is 23240242189. The next prime is 23240242219. The reversal of 23240242213 is 31224204232.

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 1609774884 + 21630467329 = 40122^2 + 147073^2 .

It is a cyclic number.

It is not a de Polignac number, because 23240242213 - 2⁹ = 23240241701 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 (23240242219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130563070 + ... + 130563247.

It is an arithmetic number, because the mean of its divisors is an integer number (5875342155).

Almost surely, 2^23240242213 is an apocalyptic number.

It is an amenable number.

23240242213 is a deficient number, since it is larger than the sum of its proper divisors (261126407).

23240242213 is an equidigital number, since it uses as much as digits as its factorization.

23240242213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261126406.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 23240242213 its reverse (31224204232), we get a palindrome (54464446445).

The spelling of 23240242213 in words is "twenty-three billion, two hundred forty million, two hundred forty-two thousand, two hundred thirteen".