531342868 has 18 divisors (see below), whose sum is σ = 1081662666. Its totient is φ = 227718288.

The previous prime is 531342863. The next prime is 531342869. The reversal of 531342868 is 868243135.

It can be written as a sum of positive squares in only one way, i.e., 525876624 + 5466244 = 22932^2 + 2338^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 531342868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531342863) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1355271 + ... + 1355662.

Almost surely, 2^531342868 is an apocalyptic number.

It is an amenable number.

531342868 is an abundant number, since it is smaller than the sum of its proper divisors (550319798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531342868 is a wasteful number, since it uses less digits than its factorization.

531342868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710951 (or 2710942 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 531342868 is about 23050.8756449728. The cubic root of 531342868 is about 809.9501407099.

The spelling of 531342868 in words is "five hundred thirty-one million, three hundred forty-two thousand, eight hundred sixty-eight".