140203321 has 4 divisors (see below), whose sum is σ = 141489700. Its totient is φ = 138916944.

The previous prime is 140203279. The next prime is 140203339. The reversal of 140203321 is 123302041.

It is a happy number.

140203321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73960000 + 66243321 = 8600^2 + 8139^2 .

It is a cyclic number.

It is not a de Polignac number, because 140203321 - 2⁹ = 140202809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140203295 and 140203304.

It is not an unprimeable number, because it can be changed into a prime (140243321) 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, 643026 + ... + 643243.

It is an arithmetic number, because the mean of its divisors is an integer number (35372425).

Almost surely, 2^140203321 is an apocalyptic number.

It is an amenable number.

140203321 is a deficient number, since it is larger than the sum of its proper divisors (1286379).

140203321 is a wasteful number, since it uses less digits than its factorization.

140203321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286378.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 140203321 is about 11840.7483293920. The cubic root of 140203321 is about 519.5006560000.

Adding to 140203321 its reverse (123302041), we get a palindrome (263505362).

The spelling of 140203321 in words is "one hundred forty million, two hundred three thousand, three hundred twenty-one".