203314021 has 4 divisors (see below), whose sum is σ = 203623200. Its totient is φ = 203004844.

The previous prime is 203314009. The next prime is 203314051. The reversal of 203314021 is 120413302.

It is a happy number.

203314021 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203314021 is a prime.

It is a super-2 number, since 2×203314021² = 82673182270376882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203313986 and 203314004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203314051) 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, 153601 + ... + 154918.

It is an arithmetic number, because the mean of its divisors is an integer number (50905800).

Almost surely, 2^203314021 is an apocalyptic number.

It is an amenable number.

203314021 is a deficient number, since it is larger than the sum of its proper divisors (309179).

203314021 is an equidigital number, since it uses as much as digits as its factorization.

203314021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309178.

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

The square root of 203314021 is about 14258.8225670986. The cubic root of 203314021 is about 588.0159545318.

Adding to 203314021 its reverse (120413302), we get a palindrome (323727323).

The spelling of 203314021 in words is "two hundred three million, three hundred fourteen thousand, twenty-one".