15530240323 has 16 divisors (see below), whose sum is σ = 16775117856. Its totient is φ = 14292622080.

The previous prime is 15530240303. The next prime is 15530240347. The reversal of 15530240323 is 32304203551.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15530240323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15530240291 and 15530240300.

It is not an unprimeable number, because it can be changed into a prime (15530240303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9023103 + ... + 9024823.

It is an arithmetic number, because the mean of its divisors is an integer number (1048444866).

Almost surely, 2^15530240323 is an apocalyptic number.

15530240323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

15530240323 is a deficient number, since it is larger than the sum of its proper divisors (1244877533).

15530240323 is a wasteful number, since it uses less digits than its factorization.

15530240323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3414.

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 15530240323 its reverse (32304203551), we get a palindrome (47834443874).

It can be divided in two parts, 155302 and 40323, that added together give a triangular number (195625 = T₆₂₅).

The spelling of 15530240323 in words is "fifteen billion, five hundred thirty million, two hundred forty thousand, three hundred twenty-three".