11321810 has 16 divisors (see below), whose sum is σ = 20433600. Its totient is φ = 4516656.

The previous prime is 11321801. The next prime is 11321831. The reversal of 11321810 is 1812311.

It is a super-2 number, since 2×11321810² = 256366763352200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3101 + ... + 5679.

It is an arithmetic number, because the mean of its divisors is an integer number (1277100).

Almost surely, 2^11321810 is an apocalyptic number.

11321810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11321810 is a deficient number, since it is larger than the sum of its proper divisors (9111790).

11321810 is a wasteful number, since it uses less digits than its factorization.

With its successor (11321811) it forms an eRAP, since the sums of their prime factors are consecutive (3025 and 3026).

11321810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3025.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 11321810 is about 3364.7897408308. The cubic root of 11321810 is about 224.5459815902.

The spelling of 11321810 in words is "eleven million, three hundred twenty-one thousand, eight hundred ten".