140111911 has 2 divisors, whose sum is σ = 140111912. Its totient is φ = 140111910.

The previous prime is 140111903. The next prime is 140111927. The reversal of 140111911 is 119111041.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140111911 - 2³ = 140111903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140111011) 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, 70055955 + 70055956.

It is an arithmetic number, because the mean of its divisors is an integer number (70055956).

Almost surely, 2^140111911 is an apocalyptic number.

140111911 is a deficient number, since it is larger than the sum of its proper divisors (1).

140111911 is an equidigital number, since it uses as much as digits as its factorization.

140111911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 19.

The square root of 140111911 is about 11836.8877243978. The cubic root of 140111911 is about 519.3877298137.

Adding to 140111911 its reverse (119111041), we get a palindrome (259222952).

The spelling of 140111911 in words is "one hundred forty million, one hundred eleven thousand, nine hundred eleven".