1308613 has 2 divisors, whose sum is σ = 1308614. Its totient is φ = 1308612.

The previous prime is 1308611. The next prime is 1308647. The reversal of 1308613 is 3168031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1258884 + 49729 = 1122^2 + 223^2 .

It is an emirp because it is prime and its reverse (3168031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1308613 - 2¹ = 1308611 is a prime.

Together with 1308611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1308611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654306 + 654307.

It is an arithmetic number, because the mean of its divisors is an integer number (654307).

2^1308613 is an apocalyptic number.

It is an amenable number.

1308613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1308613 is an equidigital number, since it uses as much as digits as its factorization.

1308613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1308613 is about 1143.9462399956. The cubic root of 1308613 is about 109.3797878720.

The spelling of 1308613 in words is "one million, three hundred eight thousand, six hundred thirteen".