11011231311 has 8 divisors (see below), whose sum is σ = 14689864704. Its totient is φ = 7336709400.

The previous prime is 11011231277. The next prime is 11011231327. The reversal of 11011231311 is 11313211011.

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

It is not a de Polignac number, because 11011231311 - 2⁶ = 11011231247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011231711) 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, 1021615 + ... + 1032336.

It is an arithmetic number, because the mean of its divisors is an integer number (1836233088).

Almost surely, 2^11011231311 is an apocalyptic number.

11011231311 is a deficient number, since it is larger than the sum of its proper divisors (3678633393).

11011231311 is a wasteful number, since it uses less digits than its factorization.

11011231311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055741.

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

Adding to 11011231311 its reverse (11313211011), we get a palindrome (22324442322).

The spelling of 11011231311 in words is "eleven billion, eleven million, two hundred thirty-one thousand, three hundred eleven".