31879327087 has 2 divisors, whose sum is σ = 31879327088. Its totient is φ = 31879327086.

The previous prime is 31879327049. The next prime is 31879327093. The reversal of 31879327087 is 78072397813.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31879327087 - 2¹¹ = 31879325039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31879327037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15939663543 + 15939663544.

It is an arithmetic number, because the mean of its divisors is an integer number (15939663544).

Almost surely, 2^31879327087 is an apocalyptic number.

31879327087 is a deficient number, since it is larger than the sum of its proper divisors (1).

31879327087 is an equidigital number, since it uses as much as digits as its factorization.

31879327087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3556224, while the sum is 55.

The spelling of 31879327087 in words is "thirty-one billion, eight hundred seventy-nine million, three hundred twenty-seven thousand, eighty-seven".