1260405313 has 16 divisors (see below), whose sum is σ = 1426553856. Its totient is φ = 1106997760.

The previous prime is 1260405287. The next prime is 1260405319. The reversal of 1260405313 is 3135040621.

It is a cyclic number.

It is not a de Polignac number, because 1260405313 - 2⁵ = 1260405281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1260405319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23281 + ... + 55342.

It is an arithmetic number, because the mean of its divisors is an integer number (89159616).

Almost surely, 2^1260405313 is an apocalyptic number.

It is an amenable number.

1260405313 is a deficient number, since it is larger than the sum of its proper divisors (166148543).

1260405313 is a wasteful number, since it uses less digits than its factorization.

1260405313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78704.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1260405313 is about 35502.1874396494. The cubic root of 1260405313 is about 1080.1980983782.

Adding to 1260405313 its reverse (3135040621), we get a palindrome (4395445934).

The spelling of 1260405313 in words is "one billion, two hundred sixty million, four hundred five thousand, three hundred thirteen".