1315200245 has 4 divisors (see below), whose sum is σ = 1578240300. Its totient is φ = 1052160192.

The previous prime is 1315200239. The next prime is 1315200251. The reversal of 1315200245 is 5420025131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5420025131 = 61 ⋅88852871.

It is an interprime number because it is at equal distance from previous prime (1315200239) and next prime (1315200251).

It can be written as a sum of positive squares in 2 ways, for example, as 145491844 + 1169708401 = 12062^2 + 34201^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315200245 - 2²⁶ = 1248091381 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1315200245.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131520020 + ... + 131520029.

It is an arithmetic number, because the mean of its divisors is an integer number (394560075).

Almost surely, 2^1315200245 is an apocalyptic number.

It is an amenable number.

1315200245 is a deficient number, since it is larger than the sum of its proper divisors (263040055).

1315200245 is an equidigital number, since it uses as much as digits as its factorization.

1315200245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263040054.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1315200245 is about 36265.6896391065. The cubic root of 1315200245 is about 1095.6301134849.

Adding to 1315200245 its reverse (5420025131), we get a palindrome (6735225376).

The spelling of 1315200245 in words is "one billion, three hundred fifteen million, two hundred thousand, two hundred forty-five".