140517823 has 8 divisors (see below), whose sum is σ = 148972160. Its totient is φ = 132308640.

The previous prime is 140517809. The next prime is 140517841. The reversal of 140517823 is 328715041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140517823 - 2⁵ = 140517791 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140511823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60108 + ... + 62401.

It is an arithmetic number, because the mean of its divisors is an integer number (18621520).

Almost surely, 2^140517823 is an apocalyptic number.

140517823 is a deficient number, since it is larger than the sum of its proper divisors (8454337).

140517823 is a wasteful number, since it uses less digits than its factorization.

140517823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122577.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 140517823 is about 11854.0213851671. The cubic root of 140517823 is about 519.8888112860. Note that the first 4 decimals are identical.

The spelling of 140517823 in words is "one hundred forty million, five hundred seventeen thousand, eight hundred twenty-three".