15321113 has 4 divisors (see below), whose sum is σ = 15335268. Its totient is φ = 15306960.

The previous prime is 15321101. The next prime is 15321127. The reversal of 15321113 is 31112351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31112351 = 569 ⋅54679.

It can be written as a sum of positive squares in 2 ways, for example, as 5914624 + 9406489 = 2432^2 + 3067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15321113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15321091 and 15321100.

It is not an unprimeable number, because it can be changed into a prime (15321143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5306 + ... + 7667.

It is an arithmetic number, because the mean of its divisors is an integer number (3833817).

Almost surely, 2^15321113 is an apocalyptic number.

It is an amenable number.

15321113 is a deficient number, since it is larger than the sum of its proper divisors (14155).

15321113 is a wasteful number, since it uses less digits than its factorization.

15321113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14154.

The product of its digits is 90, while the sum is 17.

The square root of 15321113 is about 3914.2193346822. The cubic root of 15321113 is about 248.3686472409.

Adding to 15321113 its reverse (31112351), we get a palindrome (46433464).

The spelling of 15321113 in words is "fifteen million, three hundred twenty-one thousand, one hundred thirteen".