12388203523 has 2 divisors, whose sum is σ = 12388203524. Its totient is φ = 12388203522.

The previous prime is 12388203511. The next prime is 12388203577. The reversal of 12388203523 is 32530288321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12388203523 - 2⁹ = 12388203011 is a prime.

It is a super-2 number, since 2×12388203523² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12388203323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6194101761 + 6194101762.

It is an arithmetic number, because the mean of its divisors is an integer number (6194101762).

Almost surely, 2^12388203523 is an apocalyptic number.

12388203523 is a deficient number, since it is larger than the sum of its proper divisors (1).

12388203523 is an equidigital number, since it uses as much as digits as its factorization.

12388203523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 12388203523 in words is "twelve billion, three hundred eighty-eight million, two hundred three thousand, five hundred twenty-three".