5231609 has 4 divisors (see below), whose sum is σ = 5263104. Its totient is φ = 5200116.

The previous prime is 5231599. The next prime is 5231623. The reversal of 5231609 is 9061325.

5231609 is digitally balanced in base 3, 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 not a de Polignac number, because 5231609 - 2¹² = 5227513 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (5231309) 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, 15497 + ... + 15830.

It is an arithmetic number, because the mean of its divisors is an integer number (1315776).

Almost surely, 2^5231609 is an apocalyptic number.

It is an amenable number.

5231609 is a deficient number, since it is larger than the sum of its proper divisors (31495).

5231609 is a wasteful number, since it uses less digits than its factorization.

5231609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31494.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 5231609 is about 2287.2710814418. The cubic root of 5231609 is about 173.5981500259.

The spelling of 5231609 in words is "five million, two hundred thirty-one thousand, six hundred nine".