1613313203 has 4 divisors (see below), whose sum is σ = 1620237528. Its totient is φ = 1606388880.

The previous prime is 1613313197. The next prime is 1613313271. The reversal of 1613313203 is 3023133161.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1613313203 - 2¹² = 1613309107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1613313103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3461813 + ... + 3462278.

It is an arithmetic number, because the mean of its divisors is an integer number (405059382).

Almost surely, 2^1613313203 is an apocalyptic number.

1613313203 is a deficient number, since it is larger than the sum of its proper divisors (6924325).

1613313203 is an equidigital number, since it uses as much as digits as its factorization.

1613313203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6924324.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 1613313203 is about 40166.0702957110. The cubic root of 1613313203 is about 1172.8421426091.

Adding to 1613313203 its reverse (3023133161), we get a palindrome (4636446364).

The spelling of 1613313203 in words is "one billion, six hundred thirteen million, three hundred thirteen thousand, two hundred three".