15131312011 has 16 divisors (see below), whose sum is σ = 15560512000. Its totient is φ = 14705839008.

The previous prime is 15131311999. The next prime is 15131312033. The reversal of 15131312011 is 11021313151.

It is not a de Polignac number, because 15131312011 - 2¹³ = 15131303819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15131312011.

It is not an unprimeable number, because it can be changed into a prime (15131310011) 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, 9767665 + ... + 9769213.

It is an arithmetic number, because the mean of its divisors is an integer number (972532000).

Almost surely, 2^15131312011 is an apocalyptic number.

15131312011 is a deficient number, since it is larger than the sum of its proper divisors (429199989).

15131312011 is a wasteful number, since it uses less digits than its factorization.

15131312011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578.

The product of its (nonzero) digits is 90, while the sum is 19.

Adding to 15131312011 its reverse (11021313151), we get a palindrome (26152625162).

The spelling of 15131312011 in words is "fifteen billion, one hundred thirty-one million, three hundred twelve thousand, eleven".