140111623 has 2 divisors, whose sum is σ = 140111624. Its totient is φ = 140111622.

The previous prime is 140111611. The next prime is 140111627. The reversal of 140111623 is 326111041.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140111623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140111623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140111627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70055811 + 70055812.

It is an arithmetic number, because the mean of its divisors is an integer number (70055812).

Almost surely, 2^140111623 is an apocalyptic number.

140111623 is a deficient number, since it is larger than the sum of its proper divisors (1).

140111623 is an equidigital number, since it uses as much as digits as its factorization.

140111623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 140111623 is about 11836.8755590316. The cubic root of 140111623 is about 519.3873739463.

Adding to 140111623 its reverse (326111041), we get a palindrome (466222664).

The spelling of 140111623 in words is "one hundred forty million, one hundred eleven thousand, six hundred twenty-three".