531607 has 4 divisors (see below), whose sum is σ = 562896. Its totient is φ = 500320.

The previous prime is 531589. The next prime is 531611. The reversal of 531607 is 706135.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531607 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531637) 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, 15619 + ... + 15652.

It is an arithmetic number, because the mean of its divisors is an integer number (140724).

2⁵³¹⁶⁰⁷ is an apocalyptic number.

531607 is a deficient number, since it is larger than the sum of its proper divisors (31289).

531607 is a wasteful number, since it uses less digits than its factorization.

531607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31288.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 531607 is about 729.1138457059. The cubic root of 531607 is about 81.0084327958.

The spelling of 531607 in words is "five hundred thirty-one thousand, six hundred seven".