23209912331 has 2 divisors, whose sum is σ = 23209912332. Its totient is φ = 23209912330.

The previous prime is 23209912321. The next prime is 23209912367. The reversal of 23209912331 is 13321990232.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23209912331 is a prime.

It is a super-2 number, since 2×23209912331² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 23209912291 and 23209912300.

It is not a weakly prime, because it can be changed into another prime (23209912301) 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, 11604956165 + 11604956166.

It is an arithmetic number, because the mean of its divisors is an integer number (11604956166).

Almost surely, 2^23209912331 is an apocalyptic number.

23209912331 is a deficient number, since it is larger than the sum of its proper divisors (1).

23209912331 is an equidigital number, since it uses as much as digits as its factorization.

23209912331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 35.

The spelling of 23209912331 in words is "twenty-three billion, two hundred nine million, nine hundred twelve thousand, three hundred thirty-one".