1306413253 has 4 divisors (see below), whose sum is σ = 1348555648. Its totient is φ = 1264270860.

The previous prime is 1306413247. The next prime is 1306413259. The reversal of 1306413253 is 3523146031.

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.

It is an interprime number because it is at equal distance from previous prime (1306413247) and next prime (1306413259).

It is a cyclic number.

It is not a de Polignac number, because 1306413253 - 2⁵ = 1306413221 is a prime.

It is a super-2 number, since 2×1306413253² = 3413431175228084018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306413259) 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, 21071151 + ... + 21071212.

It is an arithmetic number, because the mean of its divisors is an integer number (337138912).

Almost surely, 2^1306413253 is an apocalyptic number.

It is an amenable number.

1306413253 is a deficient number, since it is larger than the sum of its proper divisors (42142395).

1306413253 is an equidigital number, since it uses as much as digits as its factorization.

1306413253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42142394.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 1306413253 is about 36144.3391556686. The cubic root of 1306413253 is about 1093.1846523376.

Adding to 1306413253 its reverse (3523146031), we get a palindrome (4829559284).

The spelling of 1306413253 in words is "one billion, three hundred six million, four hundred thirteen thousand, two hundred fifty-three".