23203213391 has 2 divisors, whose sum is σ = 23203213392. Its totient is φ = 23203213390.

The previous prime is 23203213289. The next prime is 23203213393. The reversal of 23203213391 is 19331230232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23203213391 - 2¹⁰ = 23203212367 is a prime.

It is a super-2 number, since 2×23203213391² (a number of 22 digits) contains 22 as substring.

Together with 23203213393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23203213393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11601606695 + 11601606696.

It is an arithmetic number, because the mean of its divisors is an integer number (11601606696).

Almost surely, 2^23203213391 is an apocalyptic number.

23203213391 is a deficient number, since it is larger than the sum of its proper divisors (1).

23203213391 is an equidigital number, since it uses as much as digits as its factorization.

23203213391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 29.

The spelling of 23203213391 in words is "twenty-three billion, two hundred three million, two hundred thirteen thousand, three hundred ninety-one".