36031987 has 2 divisors, whose sum is σ = 36031988. Its totient is φ = 36031986.

The previous prime is 36031981. The next prime is 36031991. The reversal of 36031987 is 78913063.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36031987 is a prime.

It is not a weakly prime, because it can be changed into another prime (36031981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18015993 + 18015994.

It is an arithmetic number, because the mean of its divisors is an integer number (18015994).

Almost surely, 2^36031987 is an apocalyptic number.

36031987 is a deficient number, since it is larger than the sum of its proper divisors (1).

36031987 is an equidigital number, since it uses as much as digits as its factorization.

36031987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 36031987 is about 6002.6649914850. The cubic root of 36031987 is about 330.2904910752.

The spelling of 36031987 in words is "thirty-six million, thirty-one thousand, nine hundred eighty-seven".