140023317 has 16 divisors (see below), whose sum is σ = 213727232. Its totient is φ = 79878960.

The previous prime is 140023309. The next prime is 140023327. The reversal of 140023317 is 713320041.

It is not a de Polignac number, because 140023317 - 2³ = 140023309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140023293 and 140023302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140023307) 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 15 ways as a sum of consecutive naturals, for example, 7968 + ... + 18534.

It is an arithmetic number, because the mean of its divisors is an integer number (13357952).

Almost surely, 2^140023317 is an apocalyptic number.

It is an amenable number.

140023317 is a deficient number, since it is larger than the sum of its proper divisors (73703915).

140023317 is a wasteful number, since it uses less digits than its factorization.

140023317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11208.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 140023317 is about 11833.1448482641. The cubic root of 140023317 is about 519.2782355813.

Adding to 140023317 its reverse (713320041), we get a palindrome (853343358).

The spelling of 140023317 in words is "one hundred forty million, twenty-three thousand, three hundred seventeen".