140313021 has 8 divisors (see below), whose sum is σ = 187139040. Its totient is φ = 93514512.

The previous prime is 140312987. The next prime is 140313023. The reversal of 140313021 is 120313041.

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

It is not a de Polignac number, because 140313021 - 2¹⁵ = 140280253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140313023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14695 + ... + 22283.

It is an arithmetic number, because the mean of its divisors is an integer number (23392380).

Almost surely, 2^140313021 is an apocalyptic number.

It is an amenable number.

140313021 is a deficient number, since it is larger than the sum of its proper divisors (46826019).

140313021 is an equidigital number, since it uses as much as digits as its factorization.

140313021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13755.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 140313021 is about 11845.3797321994. The cubic root of 140313021 is about 519.6361125274.

Adding to 140313021 its reverse (120313041), we get a palindrome (260626062).

The spelling of 140313021 in words is "one hundred forty million, three hundred thirteen thousand, twenty-one".