140023511 has 2 divisors, whose sum is σ = 140023512. Its totient is φ = 140023510.

The previous prime is 140023493. The next prime is 140023519. The reversal of 140023511 is 115320041.

140023511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (115320041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140023511 - 2²² = 135829207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140023511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140023519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70011755 + 70011756.

It is an arithmetic number, because the mean of its divisors is an integer number (70011756).

Almost surely, 2^140023511 is an apocalyptic number.

140023511 is a deficient number, since it is larger than the sum of its proper divisors (1).

140023511 is an equidigital number, since it uses as much as digits as its factorization.

140023511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 140023511 is about 11833.1530455750. The cubic root of 140023511 is about 519.2784753983.

Adding to 140023511 its reverse (115320041), we get a palindrome (255343552).

The spelling of 140023511 in words is "one hundred forty million, twenty-three thousand, five hundred eleven".