203404061 has 16 divisors (see below), whose sum is σ = 241152384. Its totient is φ = 167940864.

The previous prime is 203404009. The next prime is 203404079. The reversal of 203404061 is 160404302.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-203404061 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 (203404261) 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, 17345 + ... + 26601.

It is an arithmetic number, because the mean of its divisors is an integer number (15072024).

Almost surely, 2^203404061 is an apocalyptic number.

It is an amenable number.

203404061 is a deficient number, since it is larger than the sum of its proper divisors (37748323).

203404061 is an equidigital number, since it uses as much as digits as its factorization.

203404061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9380.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 203404061 is about 14261.9795610567. The cubic root of 203404061 is about 588.1027449762.

Adding to 203404061 its reverse (160404302), we get a palindrome (363808363).

The spelling of 203404061 in words is "two hundred three million, four hundred four thousand, sixty-one".