531651368 has 8 divisors (see below), whose sum is σ = 996846330. Its totient is φ = 265825680.

The previous prime is 531651361. The next prime is 531651377. The reversal of 531651368 is 863156135.

It can be written as a sum of positive squares in only one way, i.e., 408929284 + 122722084 = 20222^2 + 11078^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (531651361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33228203 + ... + 33228218.

Almost surely, 2^531651368 is an apocalyptic number.

It is an amenable number.

531651368 is a deficient number, since it is larger than the sum of its proper divisors (465194962).

531651368 is a wasteful number, since it uses less digits than its factorization.

531651368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66456427 (or 66456423 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 531651368 is about 23057.5663937025. The cubic root of 531651368 is about 810.1068639173.

The spelling of 531651368 in words is "five hundred thirty-one million, six hundred fifty-one thousand, three hundred sixty-eight".