140212317 has 8 divisors (see below), whose sum is σ = 213656896. Its totient is φ = 80121312.

The previous prime is 140212283. The next prime is 140212337. The reversal of 140212317 is 713212041.

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

It is not a de Polignac number, because 140212317 - 2¹² = 140208221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 6676777 = 140212317 / (1 + 4 + 0 + 2 + 1 + 2 + 3 + 1 + 7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140212293 and 140212302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140212337) 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, 3338368 + ... + 3338409.

It is an arithmetic number, because the mean of its divisors is an integer number (26707112).

Almost surely, 2^140212317 is an apocalyptic number.

It is an amenable number.

140212317 is a deficient number, since it is larger than the sum of its proper divisors (73444579).

140212317 is an equidigital number, since it uses as much as digits as its factorization.

140212317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6676787.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 140212317 is about 11841.1281979379. The cubic root of 140212317 is about 519.5117668351.

Adding to 140212317 its reverse (713212041), we get a palindrome (853424358).

The spelling of 140212317 in words is "one hundred forty million, two hundred twelve thousand, three hundred seventeen".