203422401 has 32 divisors (see below), whose sum is σ = 370917120. Its totient is φ = 107298432.

The previous prime is 203422309. The next prime is 203422421. The reversal of 203422401 is 104224302.

203422401 is a `hidden beast` number, since 203 + 422 + 40 + 1 = 666.

It is not a de Polignac number, because 203422401 - 2¹⁴ = 203406017 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (203422421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38940 + ... + 43853.

It is an arithmetic number, because the mean of its divisors is an integer number (11591160).

Almost surely, 2^203422401 is an apocalyptic number.

203422401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

203422401 is a deficient number, since it is larger than the sum of its proper divisors (167494719).

203422401 is a wasteful number, since it uses less digits than its factorization.

203422401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82822 (or 82816 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 203422401 is about 14262.6225148112. The cubic root of 203422401 is about 588.1204199432.

Adding to 203422401 its reverse (104224302), we get a palindrome (307646703).

The spelling of 203422401 in words is "two hundred three million, four hundred twenty-two thousand, four hundred one".