609131613 has 4 divisors (see below), whose sum is σ = 812175488. Its totient is φ = 406087740.

The previous prime is 609131581. The next prime is 609131671. The reversal of 609131613 is 316131906.

609131613 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 not a de Polignac number, because 609131613 - 2⁵ = 609131581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609131693) 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, 101521933 + ... + 101521938.

It is an arithmetic number, because the mean of its divisors is an integer number (203043872).

Almost surely, 2^609131613 is an apocalyptic number.

It is an amenable number.

609131613 is a deficient number, since it is larger than the sum of its proper divisors (203043875).

609131613 is a wasteful number, since it uses less digits than its factorization.

609131613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203043874.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 609131613 is about 24680.5918283983. The cubic root of 609131613 is about 847.6899736848.

It can be divided in two parts, 60913 and 1613, that added together give a palindrome (62526).

The spelling of 609131613 in words is "six hundred nine million, one hundred thirty-one thousand, six hundred thirteen".