531966623 has 4 divisors (see below), whose sum is σ = 532051728. Its totient is φ = 531881520.

The previous prime is 531966583. The next prime is 531966629. The reversal of 531966623 is 326669135.

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

It is a cyclic number.

It is not a de Polignac number, because 531966623 - 2⁸ = 531966367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531966629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32363 + ... + 45948.

It is an arithmetic number, because the mean of its divisors is an integer number (133012932).

Almost surely, 2^531966623 is an apocalyptic number.

531966623 is a deficient number, since it is larger than the sum of its proper divisors (85105).

531966623 is an equidigital number, since it uses as much as digits as its factorization.

531966623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85104.

The product of its digits is 174960, while the sum is 41.

The square root of 531966623 is about 23064.4016397564. The cubic root of 531966623 is about 810.2669561579.

The spelling of 531966623 in words is "five hundred thirty-one million, nine hundred sixty-six thousand, six hundred twenty-three".