11231819 has 4 divisors (see below), whose sum is σ = 11244744. Its totient is φ = 11218896.

The previous prime is 11231807. The next prime is 11231821. The reversal of 11231819 is 91813211.

11231819 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11231819 is a prime.

It is a super-2 number, since 2×11231819² = 252307516097522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11231879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5057 + ... + 6930.

It is an arithmetic number, because the mean of its divisors is an integer number (2811186).

Almost surely, 2^11231819 is an apocalyptic number.

11231819 is a deficient number, since it is larger than the sum of its proper divisors (12925).

11231819 is an equidigital number, since it uses as much as digits as its factorization.

11231819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12924.

The product of its digits is 432, while the sum is 26.

The square root of 11231819 is about 3351.3906068974. The cubic root of 11231819 is about 223.9494664387.

The spelling of 11231819 in words is "eleven million, two hundred thirty-one thousand, eight hundred nineteen".