631552087 has 2 divisors, whose sum is σ = 631552088. Its totient is φ = 631552086.

The previous prime is 631552049. The next prime is 631552123. The reversal of 631552087 is 780255136.

631552087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 631552087 - 2⁷ = 631551959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631552007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315776043 + 315776044.

It is an arithmetic number, because the mean of its divisors is an integer number (315776044).

Almost surely, 2^631552087 is an apocalyptic number.

631552087 is a deficient number, since it is larger than the sum of its proper divisors (1).

631552087 is an equidigital number, since it uses as much as digits as its factorization.

631552087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 631552087 is about 25130.7000897309. The cubic root of 631552087 is about 857.9653029765.

The spelling of 631552087 in words is "six hundred thirty-one million, five hundred fifty-two thousand, eighty-seven".