1111144387 has 2 divisors, whose sum is σ = 1111144388. Its totient is φ = 1111144386.

The previous prime is 1111144379. The next prime is 1111144399. The reversal of 1111144387 is 7834411111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111144387 - 2³ = 1111144379 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111144337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555572193 + 555572194.

It is an arithmetic number, because the mean of its divisors is an integer number (555572194).

Almost surely, 2^1111144387 is an apocalyptic number.

1111144387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111144387 is an equidigital number, since it uses as much as digits as its factorization.

1111144387 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 1111144387 is about 33333.8324679296. The cubic root of 1111144387 is about 1035.7545081404.

Adding to 1111144387 its reverse (7834411111), we get a palindrome (8945555498).

The spelling of 1111144387 in words is "one billion, one hundred eleven million, one hundred forty-four thousand, three hundred eighty-seven".