11312004111 has 16 divisors (see below), whose sum is σ = 15179704320. Its totient is φ = 7492877280.

The previous prime is 11312004091. The next prime is 11312004131. The reversal of 11312004111 is 11140021311.

It is an interprime number because it is at equal distance from previous prime (11312004091) and next prime (11312004131).

It is a de Polignac number, because none of the positive numbers 2^k-11312004111 is a prime.

It is a super-2 number, since 2×11312004111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312004131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 906726 + ... + 919116.

It is an arithmetic number, because the mean of its divisors is an integer number (948731520).

Almost surely, 2^11312004111 is an apocalyptic number.

11312004111 is a deficient number, since it is larger than the sum of its proper divisors (3867700209).

11312004111 is a wasteful number, since it uses less digits than its factorization.

11312004111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14326.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11312004111 its reverse (11140021311), we get a palindrome (22452025422).

It can be divided in two parts, 1131200 and 4111, that added together give a palindrome (1135311).

The spelling of 11312004111 in words is "eleven billion, three hundred twelve million, four thousand, one hundred eleven".