1312523603 has 2 divisors, whose sum is σ = 1312523604. Its totient is φ = 1312523602.

The previous prime is 1312523599. The next prime is 1312523621. The reversal of 1312523603 is 3063252131.

It is a weak prime.

It is an emirp because it is prime and its reverse (3063252131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1312523603 - 2² = 1312523599 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312523203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656261801 + 656261802.

It is an arithmetic number, because the mean of its divisors is an integer number (656261802).

Almost surely, 2^1312523603 is an apocalyptic number.

1312523603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312523603 is an equidigital number, since it uses as much as digits as its factorization.

1312523603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 1312523603 is about 36228.7676163570. The cubic root of 1312523603 is about 1094.8863480939.

Adding to 1312523603 its reverse (3063252131), we get a palindrome (4375775734).

The spelling of 1312523603 in words is "one billion, three hundred twelve million, five hundred twenty-three thousand, six hundred three".