11311420 has 12 divisors (see below), whose sum is σ = 23754024. Its totient is φ = 4524560.

The previous prime is 11311397. The next prime is 11311453. The reversal of 11311420 is 2411311.

11311420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11311420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282766 + ... + 282805.

It is an arithmetic number, because the mean of its divisors is an integer number (1979502).

Almost surely, 2^11311420 is an apocalyptic number.

11311420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11311420 is an abundant number, since it is smaller than the sum of its proper divisors (12442604).

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

11311420 is a wasteful number, since it uses less digits than its factorization.

11311420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565580 (or 565578 counting only the distinct ones).

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

The square root of 11311420 is about 3363.2454564007. The cubic root of 11311420 is about 224.4772721174.

Adding to 11311420 its reverse (2411311), we get a palindrome (13722731).

The spelling of 11311420 in words is "eleven million, three hundred eleven thousand, four hundred twenty".