11131156603 has 8 divisors (see below), whose sum is σ = 12774551040. Its totient is φ = 9501069480.

The previous prime is 11131156549. The next prime is 11131156633. The reversal of 11131156603 is 30665113111.

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

It is not a de Polignac number, because 11131156603 - 2¹³ = 11131148411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11131156633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3325033 + ... + 3328378.

It is an arithmetic number, because the mean of its divisors is an integer number (1596818880).

Almost surely, 2^11131156603 is an apocalyptic number.

11131156603 is a deficient number, since it is larger than the sum of its proper divisors (1643394437).

11131156603 is an equidigital number, since it uses as much as digits as its factorization.

11131156603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6653657.

The product of its (nonzero) digits is 1620, while the sum is 28.

Adding to 11131156603 its reverse (30665113111), we get a palindrome (41796269714).

The spelling of 11131156603 in words is "eleven billion, one hundred thirty-one million, one hundred fifty-six thousand, six hundred three".