1315225903 has 2 divisors, whose sum is σ = 1315225904. Its totient is φ = 1315225902.

The previous prime is 1315225883. The next prime is 1315225913. The reversal of 1315225903 is 3095225131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1315225903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315225913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657612951 + 657612952.

It is an arithmetic number, because the mean of its divisors is an integer number (657612952).

Almost surely, 2^1315225903 is an apocalyptic number.

1315225903 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315225903 is an equidigital number, since it uses as much as digits as its factorization.

1315225903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 1315225903 is about 36266.0433877201. The cubic root of 1315225903 is about 1095.6372382541.

The spelling of 1315225903 in words is "one billion, three hundred fifteen million, two hundred twenty-five thousand, nine hundred three".