11331900 has 90 divisors (see below), whose sum is σ = 36759800. Its totient is φ = 3019680.

The previous prime is 11331899. The next prime is 11331917. The reversal of 11331900 is 913311.

It is a tau number, because it is divible by the number of its divisors (90).

It is a super-2 number, since 2×11331900² = 256823915220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 7401 + ... + 8799.

Almost surely, 2^11331900 is an apocalyptic number.

11331900 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 11331900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18379900).

11331900 is an abundant number, since it is smaller than the sum of its proper divisors (25427900).

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

11331900 is a wasteful number, since it uses less digits than its factorization.

11331900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425 (or 1409 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 18.

The square root of 11331900 is about 3366.2887576677. The cubic root of 11331900 is about 224.6126669297.

The spelling of 11331900 in words is "eleven million, three hundred thirty-one thousand, nine hundred".