531693229 has 2 divisors, whose sum is σ = 531693230. Its totient is φ = 531693228.

The previous prime is 531693143. The next prime is 531693233. The reversal of 531693229 is 922396135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 435849129 + 95844100 = 20877^2 + 9790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531693229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 531693191 and 531693200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531093229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265846614 + 265846615.

It is an arithmetic number, because the mean of its divisors is an integer number (265846615).

Almost surely, 2^531693229 is an apocalyptic number.

It is an amenable number.

531693229 is a deficient number, since it is larger than the sum of its proper divisors (1).

531693229 is an equidigital number, since it uses as much as digits as its factorization.

531693229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 40.

The square root of 531693229 is about 23058.4741255791. The cubic root of 531693229 is about 810.1281253400.

The spelling of 531693229 in words is "five hundred thirty-one million, six hundred ninety-three thousand, two hundred twenty-nine".