23215243013 has 2 divisors, whose sum is σ = 23215243014. Its totient is φ = 23215243012.

The previous prime is 23215243001. The next prime is 23215243019. The reversal of 23215243013 is 31034251232.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18418018369 + 4797224644 = 135713^2 + 69262^2 .

It is a cyclic number.

It is not a de Polignac number, because 23215243013 - 2⁴ = 23215242997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23215243019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11607621506 + 11607621507.

It is an arithmetic number, because the mean of its divisors is an integer number (11607621507).

Almost surely, 2^23215243013 is an apocalyptic number.

It is an amenable number.

23215243013 is a deficient number, since it is larger than the sum of its proper divisors (1).

23215243013 is an equidigital number, since it uses as much as digits as its factorization.

23215243013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 23215243013 its reverse (31034251232), we get a palindrome (54249494245).

The spelling of 23215243013 in words is "twenty-three billion, two hundred fifteen million, two hundred forty-three thousand, thirteen".