531887693 has 2 divisors, whose sum is σ = 531887694. Its totient is φ = 531887692.

The previous prime is 531887689. The next prime is 531887717. The reversal of 531887693 is 396788135.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 522899689 + 8988004 = 22867^2 + 2998^2 .

It is a cyclic number.

It is not a de Polignac number, because 531887693 - 2² = 531887689 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531887633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265943846 + 265943847.

It is an arithmetic number, because the mean of its divisors is an integer number (265943847).

Almost surely, 2^531887693 is an apocalyptic number.

It is an amenable number.

531887693 is a deficient number, since it is larger than the sum of its proper divisors (1).

531887693 is an equidigital number, since it uses as much as digits as its factorization.

531887693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 50.

The square root of 531887693 is about 23062.6904978582. The cubic root of 531887693 is about 810.2268800006.

The spelling of 531887693 in words is "five hundred thirty-one million, eight hundred eighty-seven thousand, six hundred ninety-three".