11131819 has 2 divisors, whose sum is σ = 11131820. Its totient is φ = 11131818.

The previous prime is 11131807. The next prime is 11131859. The reversal of 11131819 is 91813111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11131819 - 2¹⁵ = 11099051 is a prime.

It is a super-2 number, since 2×11131819² = 247834788497522, which contains 22 as substring.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 11131793 and 11131802.

It is not a weakly prime, because it can be changed into another prime (11131859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5565909 + 5565910.

It is an arithmetic number, because the mean of its divisors is an integer number (5565910).

Almost surely, 2^11131819 is an apocalyptic number.

11131819 is a deficient number, since it is larger than the sum of its proper divisors (1).

11131819 is an equidigital number, since it uses as much as digits as its factorization.

11131819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 25.

The square root of 11131819 is about 3336.4380707575. The cubic root of 11131819 is about 223.2828560954.

The spelling of 11131819 in words is "eleven million, one hundred thirty-one thousand, eight hundred nineteen".