11131420 has 24 divisors (see below), whose sum is σ = 23439024. Its totient is φ = 4440576.

The previous prime is 11131411. The next prime is 11131427. The reversal of 11131420 is 2413111.

11131420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11131420² = 247817022432800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11131420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131427) 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, 13047 + ... + 13873.

It is an arithmetic number, because the mean of its divisors is an integer number (976626).

Almost surely, 2^11131420 is an apocalyptic number.

11131420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11131420 is an abundant number, since it is smaller than the sum of its proper divisors (12307604).

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

11131420 is a wasteful number, since it uses less digits than its factorization.

11131420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509 (or 1507 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 11131420 is about 3336.3782759154. The cubic root of 11131420 is about 223.2801883396.

Adding to 11131420 its reverse (2413111), we get a palindrome (13544531).

The spelling of 11131420 in words is "eleven million, one hundred thirty-one thousand, four hundred twenty".