15131120313 has 4 divisors (see below), whose sum is σ = 20174827088. Its totient is φ = 10087413540.

The previous prime is 15131120311. The next prime is 15131120369. The reversal of 15131120313 is 31302113151.

15131120313 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31302113151 = 3 ⋅10434037717.

It is not a de Polignac number, because 15131120313 - 2¹ = 15131120311 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15131120313.

It is not an unprimeable number, because it can be changed into a prime (15131120311) 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, 2521853383 + ... + 2521853388.

It is an arithmetic number, because the mean of its divisors is an integer number (5043706772).

Almost surely, 2^15131120313 is an apocalyptic number.

It is an amenable number.

15131120313 is a deficient number, since it is larger than the sum of its proper divisors (5043706775).

15131120313 is an equidigital number, since it uses as much as digits as its factorization.

15131120313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5043706774.

The product of its (nonzero) digits is 270, while the sum is 21.

Adding to 15131120313 its reverse (31302113151), we get a palindrome (46433233464).

The spelling of 15131120313 in words is "fifteen billion, one hundred thirty-one million, one hundred twenty thousand, three hundred thirteen".