31608328487 has 2 divisors, whose sum is σ = 31608328488. Its totient is φ = 31608328486.

The previous prime is 31608328457. The next prime is 31608328547. The reversal of 31608328487 is 78482380613.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31608328487 - 2¹⁰ = 31608327463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31608328457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15804164243 + 15804164244.

It is an arithmetic number, because the mean of its divisors is an integer number (15804164244).

Almost surely, 2^31608328487 is an apocalyptic number.

31608328487 is a deficient number, since it is larger than the sum of its proper divisors (1).

31608328487 is an equidigital number, since it uses as much as digits as its factorization.

31608328487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1548288, while the sum is 50.

The spelling of 31608328487 in words is "thirty-one billion, six hundred eight million, three hundred twenty-eight thousand, four hundred eighty-seven".