15213983 has 4 divisors (see below), whose sum is σ = 15397368. Its totient is φ = 15030600.

The previous prime is 15213973. The next prime is 15214013. The reversal of 15213983 is 38931251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38931251 = 337 ⋅115523.

It is a cyclic number.

It is not a de Polignac number, because 15213983 - 2⁸ = 15213727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15213923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91568 + ... + 91733.

It is an arithmetic number, because the mean of its divisors is an integer number (3849342).

Almost surely, 2^15213983 is an apocalyptic number.

15213983 is a deficient number, since it is larger than the sum of its proper divisors (183385).

15213983 is an equidigital number, since it uses as much as digits as its factorization.

15213983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183384.

The product of its digits is 6480, while the sum is 32.

The square root of 15213983 is about 3900.5106076000. The cubic root of 15213983 is about 247.7884023692.

The spelling of 15213983 in words is "fifteen million, two hundred thirteen thousand, nine hundred eighty-three".