631008087 has 4 divisors (see below), whose sum is σ = 841344120. Its totient is φ = 420672056.

The previous prime is 631008083. The next prime is 631008097. The reversal of 631008087 is 780800136.

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 631008087 - 2² = 631008083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631008083) 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, 105168012 + ... + 105168017.

It is an arithmetic number, because the mean of its divisors is an integer number (210336030).

Almost surely, 2^631008087 is an apocalyptic number.

631008087 is a deficient number, since it is larger than the sum of its proper divisors (210336033).

631008087 is a wasteful number, since it uses less digits than its factorization.

631008087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210336032.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 631008087 is about 25119.8743428386. The cubic root of 631008087 is about 857.7188903641.

The spelling of 631008087 in words is "six hundred thirty-one million, eight thousand, eighty-seven".