11321919 has 24 divisors (see below), whose sum is σ = 19337760. Its totient is φ = 6245568.

The previous prime is 11321917. The next prime is 11321927. The reversal of 11321919 is 91912311.

It is not a de Polignac number, because 11321919 - 2¹ = 11321917 is a prime.

It is a super-2 number, since 2×11321919² = 256371699685122, which contains 22 as substring.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 11321892 and 11321901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321917) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1272 + ... + 4925.

It is an arithmetic number, because the mean of its divisors is an integer number (805740).

Almost surely, 2^11321919 is an apocalyptic number.

11321919 is a deficient number, since it is larger than the sum of its proper divisors (8015841).

11321919 is a wasteful number, since it uses less digits than its factorization.

11321919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6239 (or 6236 counting only the distinct ones).

The product of its digits is 486, while the sum is 27.

The square root of 11321919 is about 3364.8059379406. The cubic root of 11321919 is about 224.5467021885.

The spelling of 11321919 in words is "eleven million, three hundred twenty-one thousand, nine hundred nineteen".