11131021311 has 8 divisors (see below), whose sum is σ = 14842856064. Its totient is φ = 7419933720.

The previous prime is 11131021277. The next prime is 11131021331. The reversal of 11131021311 is 11312013111.

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

It is not a de Polignac number, because 11131021311 - 2⁷ = 11131021183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131021331) 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, 151051 + ... + 212316.

It is an arithmetic number, because the mean of its divisors is an integer number (1855357008).

Almost surely, 2^11131021311 is an apocalyptic number.

11131021311 is a deficient number, since it is larger than the sum of its proper divisors (3711834753).

11131021311 is a wasteful number, since it uses less digits than its factorization.

11131021311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373581.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 11131021311 its reverse (11312013111), we get a palindrome (22443034422).

The spelling of 11131021311 in words is "eleven billion, one hundred thirty-one million, twenty-one thousand, three hundred eleven".