11351881 has 2 divisors, whose sum is σ = 11351882. Its totient is φ = 11351880.

The previous prime is 11351849. The next prime is 11351887. The reversal of 11351881 is 18815311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9703225 + 1648656 = 3115^2 + 1284^2 .

It is a cyclic number.

It is not a de Polignac number, because 11351881 - 2⁵ = 11351849 is a prime.

It is a super-2 number, since 2×11351881² = 257730404476322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11351887) 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 as a sum of consecutive naturals, namely, 5675940 + 5675941.

It is an arithmetic number, because the mean of its divisors is an integer number (5675941).

Almost surely, 2^11351881 is an apocalyptic number.

It is an amenable number.

11351881 is a deficient number, since it is larger than the sum of its proper divisors (1).

11351881 is an equidigital number, since it uses as much as digits as its factorization.

11351881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 28.

The square root of 11351881 is about 3369.2552589556. The cubic root of 11351881 is about 224.7446056885.

The spelling of 11351881 in words is "eleven million, three hundred fifty-one thousand, eight hundred eighty-one".