1300013257 has 4 divisors (see below), whose sum is σ = 1322047440. Its totient is φ = 1277979076.

The previous prime is 1300013251. The next prime is 1300013311. The reversal of 1300013257 is 7523100031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7523100031 = 653 ⋅11520827.

It is a cyclic number.

It is not a de Polignac number, because 1300013257 - 2³ = 1300013249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1300013251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11017003 + ... + 11017120.

It is an arithmetic number, because the mean of its divisors is an integer number (330511860).

Almost surely, 2^1300013257 is an apocalyptic number.

It is an amenable number.

1300013257 is a deficient number, since it is larger than the sum of its proper divisors (22034183).

1300013257 is an equidigital number, since it uses as much as digits as its factorization.

1300013257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22034182.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 1300013257 is about 36055.6965956837. The cubic root of 1300013257 is about 1091.3965929448.

Adding to 1300013257 its reverse (7523100031), we get a palindrome (8823113288).

The spelling of 1300013257 in words is "one billion, three hundred million, thirteen thousand, two hundred fifty-seven".