1112381 has 2 divisors, whose sum is σ = 1112382. Its totient is φ = 1112380.

The previous prime is 1112369. The next prime is 1112383. The reversal of 1112381 is 1832111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 586756 + 525625 = 766^2 + 725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112381 is a prime.

It is a super-2 number, since 2×1112381² = 2474782978322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1112383, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556190 + 556191.

It is an arithmetic number, because the mean of its divisors is an integer number (556191).

2^1112381 is an apocalyptic number.

It is an amenable number.

1112381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112381 is an equidigital number, since it uses as much as digits as its factorization.

1112381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 17.

The square root of 1112381 is about 1054.6947425677. The cubic root of 1112381 is about 103.6138602427.

Adding to 1112381 its reverse (1832111), we get a palindrome (2944492).

The spelling of 1112381 in words is "one million, one hundred twelve thousand, three hundred eighty-one".