203381897 has 4 divisors (see below), whose sum is σ = 215345556. Its totient is φ = 191418240.

The previous prime is 203381891. The next prime is 203381903. The reversal of 203381897 is 798183302.

203381897 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 is an interprime number because it is at equal distance from previous prime (203381891) and next prime (203381903).

It can be written as a sum of positive squares in 2 ways, for example, as 159239161 + 44142736 = 12619^2 + 6644^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203381897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203381891) 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, 5981804 + ... + 5981837.

It is an arithmetic number, because the mean of its divisors is an integer number (53836389).

Almost surely, 2^203381897 is an apocalyptic number.

It is an amenable number.

203381897 is a deficient number, since it is larger than the sum of its proper divisors (11963659).

203381897 is a wasteful number, since it uses less digits than its factorization.

203381897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11963658.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 203381897 is about 14261.2025089051. The cubic root of 203381897 is about 588.0813832547.

The spelling of 203381897 in words is "two hundred three million, three hundred eighty-one thousand, eight hundred ninety-seven".