11031620 has 12 divisors (see below), whose sum is σ = 23166444. Its totient is φ = 4412640.

The previous prime is 11031611. The next prime is 11031659. The reversal of 11031620 is 2613011.

It can be written as a sum of positive squares in 2 ways, for example, as 8202496 + 2829124 = 2864^2 + 1682^2 .

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 11031595 and 11031604.

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, 275771 + ... + 275810.

It is an arithmetic number, because the mean of its divisors is an integer number (1930537).

Almost surely, 2^11031620 is an apocalyptic number.

11031620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11031620 is an abundant number, since it is smaller than the sum of its proper divisors (12134824).

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

11031620 is a wasteful number, since it uses less digits than its factorization.

11031620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551590 (or 551588 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 11031620 is about 3321.3882639643. The cubic root of 11031620 is about 222.6109029247.

Adding to 11031620 its reverse (2613011), we get a palindrome (13644631).

The spelling of 11031620 in words is "eleven million, thirty-one thousand, six hundred twenty".