609231 has 16 divisors (see below), whose sum is σ = 944384. Its totient is φ = 342144.

The previous prime is 609227. The next prime is 609233. The reversal of 609231 is 132906.

It is not a de Polignac number, because 609231 - 2² = 609227 is a prime.

It is a super-2 number, since 2×609231² = 742324822722, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 609198 and 609207.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 609231.

It is not an unprimeable number, because it can be changed into a prime (609233) 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, 1191 + ... + 1623.

It is an arithmetic number, because the mean of its divisors is an integer number (59024).

2⁶⁰⁹²³¹ is an apocalyptic number.

609231 is a deficient number, since it is larger than the sum of its proper divisors (335153).

609231 is a wasteful number, since it uses less digits than its factorization.

609231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 609231 is about 780.5325105337. The cubic root of 609231 is about 84.7736074713.

The spelling of 609231 in words is "six hundred nine thousand, two hundred thirty-one".