23211211393 has 2 divisors, whose sum is σ = 23211211394. Its totient is φ = 23211211392.

The previous prime is 23211211291. The next prime is 23211211421. The reversal of 23211211393 is 39311211232.

It is an a-pointer prime, because the next prime (23211211421) can be obtained adding 23211211393 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21799931904 + 1411279489 = 147648^2 + 37567^2 .

It is a cyclic number.

It is not a de Polignac number, because 23211211393 - 2¹³ = 23211203201 is a prime.

It is not a weakly prime, because it can be changed into another prime (23211212393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605605696 + 11605605697.

It is an arithmetic number, because the mean of its divisors is an integer number (11605605697).

Almost surely, 2^23211211393 is an apocalyptic number.

It is an amenable number.

23211211393 is a deficient number, since it is larger than the sum of its proper divisors (1).

23211211393 is an equidigital number, since it uses as much as digits as its factorization.

23211211393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 28.

The spelling of 23211211393 in words is "twenty-three billion, two hundred eleven million, two hundred eleven thousand, three hundred ninety-three".