11131133231 has 8 divisors (see below), whose sum is σ = 11787724224. Its totient is φ = 10474744320.

The previous prime is 11131133207. The next prime is 11131133263. The reversal of 11131133231 is 13233113111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11131133231 is a prime.

It is a super-3 number, since 3×11131133231³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131139231) 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, 71306 + ... + 165368.

It is an arithmetic number, because the mean of its divisors is an integer number (1473465528).

Almost surely, 2^11131133231 is an apocalyptic number.

11131133231 is a deficient number, since it is larger than the sum of its proper divisors (656590993).

11131133231 is an equidigital number, since it uses as much as digits as its factorization.

11131133231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101041.

The product of its digits is 162, while the sum is 20.

Adding to 11131133231 its reverse (13233113111), we get a palindrome (24364246342).

The spelling of 11131133231 in words is "eleven billion, one hundred thirty-one million, one hundred thirty-three thousand, two hundred thirty-one".