140523023 has 4 divisors (see below), whose sum is σ = 141534120. Its totient is φ = 139511928.

The previous prime is 140523001. The next prime is 140523043. The reversal of 140523023 is 320325041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140523023 - 2⁶ = 140522959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140522986 and 140523004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140523043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505340 + ... + 505617.

It is an arithmetic number, because the mean of its divisors is an integer number (35383530).

Almost surely, 2^140523023 is an apocalyptic number.

140523023 is a deficient number, since it is larger than the sum of its proper divisors (1011097).

140523023 is a wasteful number, since it uses less digits than its factorization.

140523023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011096.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 140523023 is about 11854.2407179878. The cubic root of 140523023 is about 519.8952242055.

Adding to 140523023 its reverse (320325041), we get a palindrome (460848064).

The spelling of 140523023 in words is "one hundred forty million, five hundred twenty-three thousand, twenty-three".