15280313 has 8 divisors (see below), whose sum is σ = 16252320. Its totient is φ = 14325120.

The previous prime is 15280301. The next prime is 15280319. The reversal of 15280313 is 31308251.

15280313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15280313 - 2¹⁴ = 15263929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15280319) 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, 2303 + ... + 5988.

It is an arithmetic number, because the mean of its divisors is an integer number (2031540).

Almost surely, 2^15280313 is an apocalyptic number.

It is an amenable number.

15280313 is a deficient number, since it is larger than the sum of its proper divisors (972007).

15280313 is an equidigital number, since it uses as much as digits as its factorization.

15280313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8407.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 15280313 is about 3909.0040931163. The cubic root of 15280313 is about 248.1479833499.

Adding to 15280313 its reverse (31308251), we get a palindrome (46588564).

The spelling of 15280313 in words is "fifteen million, two hundred eighty thousand, three hundred thirteen".