23213897009 has 2 divisors, whose sum is σ = 23213897010. Its totient is φ = 23213897008.

The previous prime is 23213896961. The next prime is 23213897027. The reversal of 23213897009 is 90079831232.

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., 23150535409 + 63361600 = 152153^2 + 7960^2 .

It is a cyclic number.

It is not a de Polignac number, because 23213897009 - 2⁸ = 23213896753 is a prime.

It is not a weakly prime, because it can be changed into another prime (23213897209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11606948504 + 11606948505.

It is an arithmetic number, because the mean of its divisors is an integer number (11606948505).

Almost surely, 2^23213897009 is an apocalyptic number.

It is an amenable number.

23213897009 is a deficient number, since it is larger than the sum of its proper divisors (1).

23213897009 is an equidigital number, since it uses as much as digits as its factorization.

23213897009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 23213897009 in words is "twenty-three billion, two hundred thirteen million, eight hundred ninety-seven thousand, nine".