11031420 has 48 divisors (see below), whose sum is σ = 31479840. Its totient is φ = 2885376.

The previous prime is 11031413. The next prime is 11031437. The reversal of 11031420 is 2413011.

It is a happy number.

11031420 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11031396 and 11031405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1446 + ... + 4914.

It is an arithmetic number, because the mean of its divisors is an integer number (655830).

Almost surely, 2^11031420 is an apocalyptic number.

11031420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11031420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15739920).

11031420 is an abundant number, since it is smaller than the sum of its proper divisors (20448420).

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

11031420 is a wasteful number, since it uses less digits than its factorization.

11031420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3534 (or 3532 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 11031420 is about 3321.3581559356. The cubic root of 11031420 is about 222.6095576267.

Adding to 11031420 its reverse (2413011), we get a palindrome (13444431).

The spelling of 11031420 in words is "eleven million, thirty-one thousand, four hundred twenty".