203133397 has 4 divisors (see below), whose sum is σ = 203229900. Its totient is φ = 203036896.

The previous prime is 203133383. The next prime is 203133409. The reversal of 203133397 is 793331302.

203133397 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 122744241 + 80389156 = 11079^2 + 8966^2 .

It is a cyclic number.

It is not a de Polignac number, because 203133397 - 2⁷ = 203133269 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 (203133097) 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, 45022 + ... + 49327.

It is an arithmetic number, because the mean of its divisors is an integer number (50807475).

Almost surely, 2^203133397 is an apocalyptic number.

It is an amenable number.

203133397 is a deficient number, since it is larger than the sum of its proper divisors (96503).

203133397 is an equidigital number, since it uses as much as digits as its factorization.

203133397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96502.

The product of its (nonzero) digits is 10206, while the sum is 31.

The square root of 203133397 is about 14252.4873969423. The cubic root of 203133397 is about 587.8417719857.

Adding to 203133397 its reverse (793331302), we get a palindrome (996464699).

The spelling of 203133397 in words is "two hundred three million, one hundred thirty-three thousand, three hundred ninety-seven".