23210320213 has 2 divisors, whose sum is σ = 23210320214. Its totient is φ = 23210320212.

The previous prime is 23210320193. The next prime is 23210320241. The reversal of 23210320213 is 31202301232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21486575889 + 1723744324 = 146583^2 + 41518^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23210320213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23210320253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605160106 + 11605160107.

It is an arithmetic number, because the mean of its divisors is an integer number (11605160107).

Almost surely, 2^23210320213 is an apocalyptic number.

It is an amenable number.

23210320213 is a deficient number, since it is larger than the sum of its proper divisors (1).

23210320213 is an equidigital number, since it uses as much as digits as its factorization.

23210320213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 23210320213 its reverse (31202301232), we get a palindrome (54412621445).

The spelling of 23210320213 in words is "twenty-three billion, two hundred ten million, three hundred twenty thousand, two hundred thirteen".