5231987 has 2 divisors, whose sum is σ = 5231988. Its totient is φ = 5231986.

The previous prime is 5231981. The next prime is 5232023. The reversal of 5231987 is 7891325.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5231987 - 2⁶ = 5231923 is a prime.

It is a Chen prime.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (5231981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2615993 + 2615994.

It is an arithmetic number, because the mean of its divisors is an integer number (2615994).

Almost surely, 2^5231987 is an apocalyptic number.

5231987 is a deficient number, since it is larger than the sum of its proper divisors (1).

5231987 is an equidigital number, since it uses as much as digits as its factorization.

5231987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 35.

The square root of 5231987 is about 2287.3537111693. The cubic root of 5231987 is about 173.6023309271.

The spelling of 5231987 in words is "five million, two hundred thirty-one thousand, nine hundred eighty-seven".