15230880309 has 4 divisors (see below), whose sum is σ = 20307840416. Its totient is φ = 10153920204.

The previous prime is 15230880299. The next prime is 15230880341. The reversal of 15230880309 is 90308803251.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90308803251 = 3 ⋅30102934417.

It is not a de Polignac number, because 15230880309 - 2⁸ = 15230880053 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15230880349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2538480049 + ... + 2538480054.

It is an arithmetic number, because the mean of its divisors is an integer number (5076960104).

Almost surely, 2^15230880309 is an apocalyptic number.

It is an amenable number.

15230880309 is a deficient number, since it is larger than the sum of its proper divisors (5076960107).

15230880309 is an equidigital number, since it uses as much as digits as its factorization.

15230880309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5076960106.

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 15230880309 in words is "fifteen billion, two hundred thirty million, eight hundred eighty thousand, three hundred nine".