15131134123 has 4 divisors (see below), whose sum is σ = 17292724720. Its totient is φ = 12969543528.

The previous prime is 15131134103. The next prime is 15131134129. The reversal of 15131134123 is 32143113151.

15131134123 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: 32143113151 = 659 ⋅48775589.

It is a cyclic number.

It is not a de Polignac number, because 15131134123 - 2²¹ = 15129036971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15131134129) 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, 1080795288 + ... + 1080795301.

It is an arithmetic number, because the mean of its divisors is an integer number (4323181180).

Almost surely, 2^15131134123 is an apocalyptic number.

15131134123 is a deficient number, since it is larger than the sum of its proper divisors (2161590597).

15131134123 is an equidigital number, since it uses as much as digits as its factorization.

15131134123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161590596.

The product of its digits is 1080, while the sum is 25.

Adding to 15131134123 its reverse (32143113151), we get a palindrome (47274247274).

The spelling of 15131134123 in words is "fifteen billion, one hundred thirty-one million, one hundred thirty-four thousand, one hundred twenty-three".