2111131404 has 96 divisors (see below), whose sum is σ = 5608673280. Its totient is φ = 686462400.

The previous prime is 2111131361. The next prime is 2111131409. The reversal of 2111131404 is 4041311112.

It is a super-2 number, since 2×2111131404² = 8913751609910022432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2111131409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1092319 + ... + 1094249.

It is an arithmetic number, because the mean of its divisors is an integer number (58423680).

Almost surely, 2^2111131404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111131404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2804336640).

2111131404 is an abundant number, since it is smaller than the sum of its proper divisors (3497541876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2111131404 is a wasteful number, since it uses less digits than its factorization.

2111131404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188 (or 2180 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 2111131404 is about 45947.0500032374. The cubic root of 2111131404 is about 1282.8378207917.

Adding to 2111131404 its reverse (4041311112), we get a palindrome (6152442516).

The spelling of 2111131404 in words is "two billion, one hundred eleven million, one hundred thirty-one thousand, four hundred four".