203402461 has 2 divisors, whose sum is σ = 203402462. Its totient is φ = 203402460.

The previous prime is 203402413. The next prime is 203402471. The reversal of 203402461 is 164204302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155875225 + 47527236 = 12485^2 + 6894^2 .

It is a cyclic number.

It is not a de Polignac number, because 203402461 - 2⁷ = 203402333 is a prime.

It is a super-2 number, since 2×203402461² = 82745122281713042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203402401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101701230 + 101701231.

It is an arithmetic number, because the mean of its divisors is an integer number (101701231).

Almost surely, 2^203402461 is an apocalyptic number.

It is an amenable number.

203402461 is a deficient number, since it is larger than the sum of its proper divisors (1).

203402461 is an equidigital number, since it uses as much as digits as its factorization.

203402461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 203402461 is about 14261.9234677515. The cubic root of 203402461 is about 588.1012029440.

Adding to 203402461 its reverse (164204302), we get a palindrome (367606763).

It can be divided in two parts, 20340 and 2461, that added together give a square (22801 = 151²).

The spelling of 203402461 in words is "two hundred three million, four hundred two thousand, four hundred sixty-one".