5231986 has 16 divisors (see below), whose sum is σ = 8026200. Its totient is φ = 2557440.

The previous prime is 5231981. The next prime is 5231987. The reversal of 5231986 is 6891325.

It can be written as a sum of positive squares in 4 ways, for example, as 1640961 + 3591025 = 1281^2 + 1895^2 .

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5231981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28816 + ... + 28996.

Almost surely, 2^5231986 is an apocalyptic number.

5231986 is a deficient number, since it is larger than the sum of its proper divisors (2794214).

5231986 is a wasteful number, since it uses less digits than its factorization.

5231986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429.

The product of its digits is 12960, while the sum is 34.

The square root of 5231986 is about 2287.3534925761. The cubic root of 5231986 is about 173.6023198668.

The spelling of 5231986 in words is "five million, two hundred thirty-one thousand, nine hundred eighty-six".