11237881 has 2 divisors, whose sum is σ = 11237882. Its totient is φ = 11237880.

The previous prime is 11237857. The next prime is 11237887. The reversal of 11237881 is 18873211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7376656 + 3861225 = 2716^2 + 1965^2 .

It is a cyclic number.

It is not a de Polignac number, because 11237881 - 2¹³ = 11229689 is a prime.

It is a super-2 number, since 2×11237881² = 252579938740322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11237887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5618940 + 5618941.

It is an arithmetic number, because the mean of its divisors is an integer number (5618941).

Almost surely, 2^11237881 is an apocalyptic number.

It is an amenable number.

11237881 is a deficient number, since it is larger than the sum of its proper divisors (1).

11237881 is an equidigital number, since it uses as much as digits as its factorization.

11237881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 31.

The square root of 11237881 is about 3352.2948855970. The cubic root of 11237881 is about 223.9897489463.

The spelling of 11237881 in words is "eleven million, two hundred thirty-seven thousand, eight hundred eighty-one".