1315315250 has 16 divisors (see below), whose sum is σ = 2462270616. Its totient is φ = 526126000.

The previous prime is 1315315249. The next prime is 1315315277. The reversal of 1315315250 is 525135131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 817445281 + 497869969 = 28591^2 + 22313^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2630381 + ... + 2630880.

Almost surely, 2^1315315250 is an apocalyptic number.

1315315250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1315315250 is a deficient number, since it is larger than the sum of its proper divisors (1146955366).

1315315250 is an equidigital number, since it uses as much as digits as its factorization.

1315315250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5261278 (or 5261268 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 1315315250 is about 36267.2751940368. The cubic root of 1315315250 is about 1095.6620476001.

The spelling of 1315315250 in words is "one billion, three hundred fifteen million, three hundred fifteen thousand, two hundred fifty".