1304513 has 8 divisors (see below), whose sum is σ = 1501632. Its totient is φ = 1110096.

The previous prime is 1304503. The next prime is 1304519. The reversal of 1304513 is 3154031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1304513 - 2¹⁸ = 1042369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 1304491 and 1304500.

It is not an unprimeable number, because it can be changed into a prime (1304519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506 + ... + 1692.

It is an arithmetic number, because the mean of its divisors is an integer number (187704).

2^1304513 is an apocalyptic number.

It is an amenable number.

1304513 is a deficient number, since it is larger than the sum of its proper divisors (197119).

1304513 is a wasteful number, since it uses less digits than its factorization.

1304513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 1304513 is about 1142.1527918803. The cubic root of 1304513 is about 109.2654361885.

Adding to 1304513 its reverse (3154031), we get a palindrome (4458544).

The spelling of 1304513 in words is "one million, three hundred four thousand, five hundred thirteen".