203402061 has 12 divisors (see below), whose sum is σ = 301744092. Its totient is φ = 131936256.

The previous prime is 203402051. The next prime is 203402063. The reversal of 203402061 is 160204302.

It is a happy number.

203402061 is a `hidden beast` number, since 203 + 402 + 0 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 93026025 + 110376036 = 9645^2 + 10506^2 .

It is not a de Polignac number, because 203402061 - 2¹¹ = 203400013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203402063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 305076 + ... + 305741.

It is an arithmetic number, because the mean of its divisors is an integer number (25145341).

Almost surely, 2^203402061 is an apocalyptic number.

It is an amenable number.

203402061 is a deficient number, since it is larger than the sum of its proper divisors (98342031).

203402061 is a wasteful number, since it uses less digits than its factorization.

203402061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610860 (or 610857 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 203402061 is about 14261.9094443907. The cubic root of 203402061 is about 588.1008174347.

Adding to 203402061 its reverse (160204302), we get a palindrome (363606363).

The spelling of 203402061 in words is "two hundred three million, four hundred two thousand, sixty-one".