15423013 has 4 divisors (see below), whose sum is σ = 15684480. Its totient is φ = 15161548.

The previous prime is 15422987. The next prime is 15423017. The reversal of 15423013 is 31032451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15423013 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 (15423017) 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, 130645 + ... + 130762.

It is an arithmetic number, because the mean of its divisors is an integer number (3921120).

Almost surely, 2^15423013 is an apocalyptic number.

It is an amenable number.

15423013 is a deficient number, since it is larger than the sum of its proper divisors (261467).

15423013 is an equidigital number, since it uses as much as digits as its factorization.

15423013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261466.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 15423013 is about 3927.2144071848. The cubic root of 15423013 is about 248.9180603814.

Adding to 15423013 its reverse (31032451), we get a palindrome (46455464).

The spelling of 15423013 in words is "fifteen million, four hundred twenty-three thousand, thirteen".