12523440203 has 2 divisors, whose sum is σ = 12523440204. Its totient is φ = 12523440202.

The previous prime is 12523440023. The next prime is 12523440217. The reversal of 12523440203 is 30204432521.

Together with previous prime (12523440023) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12523440203 - 2¹⁴ = 12523423819 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12523440263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6261720101 + 6261720102.

It is an arithmetic number, because the mean of its divisors is an integer number (6261720102).

Almost surely, 2^12523440203 is an apocalyptic number.

12523440203 is a deficient number, since it is larger than the sum of its proper divisors (1).

12523440203 is an equidigital number, since it uses as much as digits as its factorization.

12523440203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 12523440203 its reverse (30204432521), we get a palindrome (42727872724).

The spelling of 12523440203 in words is "twelve billion, five hundred twenty-three million, four hundred forty thousand, two hundred three".