531606233 has 4 divisors (see below), whose sum is σ = 532973220. Its totient is φ = 530239248.

The previous prime is 531606227. The next prime is 531606241. The reversal of 531606233 is 332606135.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 392554969 + 139051264 = 19813^2 + 11792^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531606233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 531606196 and 531606205.

It is not an unprimeable number, because it can be changed into a prime (531606293) 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, 682910 + ... + 683687.

It is an arithmetic number, because the mean of its divisors is an integer number (133243305).

Almost surely, 2^531606233 is an apocalyptic number.

It is an amenable number.

531606233 is a deficient number, since it is larger than the sum of its proper divisors (1366987).

531606233 is a wasteful number, since it uses less digits than its factorization.

531606233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366986.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 531606233 is about 23056.5876269668. The cubic root of 531606233 is about 810.0839383623.

The spelling of 531606233 in words is "five hundred thirty-one million, six hundred six thousand, two hundred thirty-three".