205303413 has 16 divisors (see below), whose sum is σ = 314577536. Its totient is φ = 116665920.

The previous prime is 205303409. The next prime is 205303429. The reversal of 205303413 is 314303502.

It is not a de Polignac number, because 205303413 - 2² = 205303409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 205303413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205303463) 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, 23206 + ... + 30807.

It is an arithmetic number, because the mean of its divisors is an integer number (19661096).

Almost surely, 2^205303413 is an apocalyptic number.

It is an amenable number.

205303413 is a deficient number, since it is larger than the sum of its proper divisors (109274123).

205303413 is a wasteful number, since it uses less digits than its factorization.

205303413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54204.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 205303413 is about 14328.4127871862. The cubic root of 205303413 is about 589.9276105766.

Adding to 205303413 its reverse (314303502), we get a palindrome (519606915).

The spelling of 205303413 in words is "two hundred five million, three hundred three thousand, four hundred thirteen".