531353216 has 16 divisors (see below), whose sum is σ = 1058555490. Its totient is φ = 265676544.

The previous prime is 531353213. The next prime is 531353227. The reversal of 531353216 is 612353135.

It can be written as a sum of positive squares in only one way, i.e., 524593216 + 6760000 = 22904^2 + 2600^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (531353213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2075471 + ... + 2075726.

Almost surely, 2^531353216 is an apocalyptic number.

It is an amenable number.

531353216 is a deficient number, since it is larger than the sum of its proper divisors (527202274).

531353216 is an equidigital number, since it uses as much as digits as its factorization.

531353216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4151211 (or 4151199 counting only the distinct ones).

The product of its digits is 8100, while the sum is 29.

The square root of 531353216 is about 23051.1001038996. The cubic root of 531353216 is about 809.9553986517.

The spelling of 531353216 in words is "five hundred thirty-one million, three hundred fifty-three thousand, two hundred sixteen".