23112312409 has 2 divisors, whose sum is σ = 23112312410. Its totient is φ = 23112312408.

The previous prime is 23112312397. The next prime is 23112312437. The reversal of 23112312409 is 90421321132.

It is a happy number.

It is an a-pointer prime, because the next prime (23112312437) can be obtained adding 23112312409 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21004125184 + 2108187225 = 144928^2 + 45915^2 .

It is a cyclic number.

It is not a de Polignac number, because 23112312409 - 2⁹ = 23112311897 is a prime.

It is not a weakly prime, because it can be changed into another prime (23112312479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11556156204 + 11556156205.

It is an arithmetic number, because the mean of its divisors is an integer number (11556156205).

Almost surely, 2^23112312409 is an apocalyptic number.

It is an amenable number.

23112312409 is a deficient number, since it is larger than the sum of its proper divisors (1).

23112312409 is an equidigital number, since it uses as much as digits as its factorization.

23112312409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 23112312409 in words is "twenty-three billion, one hundred twelve million, three hundred twelve thousand, four hundred nine".