531868 has 6 divisors (see below), whose sum is σ = 930776. Its totient is φ = 265932.

The previous prime is 531863. The next prime is 531871. The reversal of 531868 is 868135.

It is a plaindrome in base 11.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66480 + ... + 66487.

2⁵³¹⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

531868 is a deficient number, since it is larger than the sum of its proper divisors (398908).

531868 is a wasteful number, since it uses less digits than its factorization.

531868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132971 (or 132969 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 531868 is about 729.2928081368. The cubic root of 531868 is about 81.0216880399.

The spelling of 531868 in words is "five hundred thirty-one thousand, eight hundred sixty-eight".