203020397 has 16 divisors (see below), whose sum is σ = 211680000. Its totient is φ = 194578560.

The previous prime is 203020351. The next prime is 203020399. The reversal of 203020397 is 793020302.

203020397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 203020397 - 2¹⁰ = 203019373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203020399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1020104 + ... + 1020302.

It is an arithmetic number, because the mean of its divisors is an integer number (13230000).

Almost surely, 2^203020397 is an apocalyptic number.

It is an amenable number.

203020397 is a deficient number, since it is larger than the sum of its proper divisors (8659603).

203020397 is a wasteful number, since it uses less digits than its factorization.

203020397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 203020397 is about 14248.5226251707. The cubic root of 203020397 is about 587.7327493068.

Adding to 203020397 its reverse (793020302), we get a palindrome (996040699).

It can be divided in two parts, 2030203 and 97, that multiplied together give a palindrome (196929691).

The spelling of 203020397 in words is "two hundred three million, twenty thousand, three hundred ninety-seven".