204312401 has 4 divisors (see below), whose sum is σ = 204367872. Its totient is φ = 204256932.

The previous prime is 204312391. The next prime is 204312463. The reversal of 204312401 is 104213402.

204312401 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204312401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204312401.

It is not an unprimeable number, because it can be changed into a prime (204312601) 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, 21785 + ... + 29718.

It is an arithmetic number, because the mean of its divisors is an integer number (51091968).

Almost surely, 2^204312401 is an apocalyptic number.

It is an amenable number.

204312401 is a deficient number, since it is larger than the sum of its proper divisors (55471).

204312401 is an equidigital number, since it uses as much as digits as its factorization.

204312401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55470.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 204312401 is about 14293.7888958806. The cubic root of 204312401 is about 588.9768737503.

Adding to 204312401 its reverse (104213402), we get a palindrome (308525803).

The spelling of 204312401 in words is "two hundred four million, three hundred twelve thousand, four hundred one".