15204230231 has 4 divisors (see below), whose sum is σ = 15269484672. Its totient is φ = 15138975792.

The previous prime is 15204230227. The next prime is 15204230243. The reversal of 15204230231 is 13203240251.

15204230231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13203240251 = 101 ⋅130725151.

It is a cyclic number.

It is not a de Polignac number, because 15204230231 - 2² = 15204230227 is a prime.

It is a super-2 number, since 2×15204230231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15204230197 and 15204230206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15204230221) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 32626871 + ... + 32627336.

It is an arithmetic number, because the mean of its divisors is an integer number (3817371168).

Almost surely, 2^15204230231 is an apocalyptic number.

15204230231 is a deficient number, since it is larger than the sum of its proper divisors (65254441).

15204230231 is an equidigital number, since it uses as much as digits as its factorization.

15204230231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65254440.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 15204230231 its reverse (13203240251), we get a palindrome (28407470482).

The spelling of 15204230231 in words is "fifteen billion, two hundred four million, two hundred thirty thousand, two hundred thirty-one".