111343381 has 2 divisors, whose sum is σ = 111343382. Its totient is φ = 111343380.

The previous prime is 111343373. The next prime is 111343399. The reversal of 111343381 is 183343111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110965156 + 378225 = 10534^2 + 615^2 .

It is a cyclic number.

It is not a de Polignac number, because 111343381 - 2³ = 111343373 is a prime.

It is a super-2 number, since 2×111343381² = 24794696985022322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111344381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55671690 + 55671691.

It is an arithmetic number, because the mean of its divisors is an integer number (55671691).

Almost surely, 2^111343381 is an apocalyptic number.

It is an amenable number.

111343381 is a deficient number, since it is larger than the sum of its proper divisors (1).

111343381 is an equidigital number, since it uses as much as digits as its factorization.

111343381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 25.

The square root of 111343381 is about 10551.9373102763. The cubic root of 111343381 is about 481.0846147622.

Adding to 111343381 its reverse (183343111), we get a palindrome (294686492).

The spelling of 111343381 in words is "one hundred eleven million, three hundred forty-three thousand, three hundred eighty-one".