80631287 has 4 divisors (see below), whose sum is σ = 87961416. Its totient is φ = 73301160.

The previous prime is 80631253. The next prime is 80631301. The reversal of 80631287 is 78213608.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80631287 - 2¹⁴ = 80614903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80631247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3665048 + ... + 3665069.

It is an arithmetic number, because the mean of its divisors is an integer number (21990354).

Almost surely, 2^80631287 is an apocalyptic number.

80631287 is a deficient number, since it is larger than the sum of its proper divisors (7330129).

80631287 is a wasteful number, since it uses less digits than its factorization.

80631287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7330128.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 80631287 is about 8979.4925803188. The cubic root of 80631287 is about 432.0173586275.

The spelling of 80631287 in words is "eighty million, six hundred thirty-one thousand, two hundred eighty-seven".