140313221 has 4 divisors (see below), whose sum is σ = 140443392. Its totient is φ = 140183052.

The previous prime is 140313211. The next prime is 140313247. The reversal of 140313221 is 122313041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122313041 = 373 ⋅327917.

It is a cyclic number.

It is not a de Polignac number, because 140313221 - 2¹⁰ = 140312197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140313221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140313211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63455 + ... + 65628.

It is an arithmetic number, because the mean of its divisors is an integer number (35110848).

Almost surely, 2^140313221 is an apocalyptic number.

It is an amenable number.

140313221 is a deficient number, since it is larger than the sum of its proper divisors (130171).

140313221 is a wasteful number, since it uses less digits than its factorization.

140313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130170.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 140313221 is about 11845.3881743065. The cubic root of 140313221 is about 519.6363594210.

Adding to 140313221 its reverse (122313041), we get a palindrome (262626262).

The spelling of 140313221 in words is "one hundred forty million, three hundred thirteen thousand, two hundred twenty-one".