11143553331 has 8 divisors (see below), whose sum is σ = 14874384384. Its totient is φ = 7420878920.

The previous prime is 11143553327. The next prime is 11143553359. The reversal of 11143553331 is 13335534111.

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 11143553331 - 2² = 11143553327 is a prime.

It is a super-4 number, since 4×11143553331⁴ (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (11143553131) 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, 2035971 + ... + 2041436.

It is an arithmetic number, because the mean of its divisors is an integer number (1859298048).

Almost surely, 2^11143553331 is an apocalyptic number.

11143553331 is a deficient number, since it is larger than the sum of its proper divisors (3730831053).

11143553331 is an equidigital number, since it uses as much as digits as its factorization.

11143553331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4078321.

The product of its digits is 8100, while the sum is 30.

The spelling of 11143553331 in words is "eleven billion, one hundred forty-three million, five hundred fifty-three thousand, three hundred thirty-one".