11315131543 has 8 divisors (see below), whose sum is σ = 11821459968. Its totient is φ = 10810000344.

The previous prime is 11315131523. The next prime is 11315131547. The reversal of 11315131543 is 34513151311.

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 11315131543 - 2⁵ = 11315131511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11315131547) 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, 279955 + ... + 317812.

It is an arithmetic number, because the mean of its divisors is an integer number (1477682496).

Almost surely, 2^11315131543 is an apocalyptic number.

11315131543 is a deficient number, since it is larger than the sum of its proper divisors (506328425).

11315131543 is an equidigital number, since it uses as much as digits as its factorization.

11315131543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598613.

The product of its digits is 2700, while the sum is 28.

Adding to 11315131543 its reverse (34513151311), we get a palindrome (45828282854).

The spelling of 11315131543 in words is "eleven billion, three hundred fifteen million, one hundred thirty-one thousand, five hundred forty-three".