11311217473 has 8 divisors (see below), whose sum is σ = 11960879616. Its totient is φ = 10679354400.

The previous prime is 11311217453. The next prime is 11311217501. The reversal of 11311217473 is 37471211311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11311217473 - 2²⁵ = 11277663041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11311217413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4448461 + ... + 4451002.

It is an arithmetic number, because the mean of its divisors is an integer number (1495109952).

Almost surely, 2^11311217473 is an apocalyptic number.

It is an amenable number.

11311217473 is a deficient number, since it is larger than the sum of its proper divisors (649662143).

11311217473 is an equidigital number, since it uses as much as digits as its factorization.

11311217473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8899535.

The product of its digits is 3528, while the sum is 31.

Adding to 11311217473 its reverse (37471211311), we get a palindrome (48782428784).

The spelling of 11311217473 in words is "eleven billion, three hundred eleven million, two hundred seventeen thousand, four hundred seventy-three".