15315321530 has 16 divisors (see below), whose sum is σ = 28456856064. Its totient is φ = 5928511440.

The previous prime is 15315321529. The next prime is 15315321569. The reversal of 15315321530 is 3512351351.

It is a happy number.

15315321530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 15315321493 and 15315321502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24701822 + ... + 24702441.

It is an arithmetic number, because the mean of its divisors is an integer number (1778553504).

Almost surely, 2^15315321530 is an apocalyptic number.

15315321530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15315321530 is a deficient number, since it is larger than the sum of its proper divisors (13141534534).

15315321530 is a wasteful number, since it uses less digits than its factorization.

15315321530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49404301.

The product of its (nonzero) digits is 6750, while the sum is 29.

Adding to 15315321530 its reverse (3512351351), we get a palindrome (18827672881).

The spelling of 15315321530 in words is "fifteen billion, three hundred fifteen million, three hundred twenty-one thousand, five hundred thirty".