31631632147 has 2 divisors, whose sum is σ = 31631632148. Its totient is φ = 31631632146.

The previous prime is 31631632129. The next prime is 31631632163. The reversal of 31631632147 is 74123613613.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31631632147 - 2¹⁵ = 31631599379 is a prime.

It is not a weakly prime, because it can be changed into another prime (31631632127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15815816073 + 15815816074.

It is an arithmetic number, because the mean of its divisors is an integer number (15815816074).

Almost surely, 2^31631632147 is an apocalyptic number.

31631632147 is a deficient number, since it is larger than the sum of its proper divisors (1).

31631632147 is an equidigital number, since it uses as much as digits as its factorization.

31631632147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 37.

The spelling of 31631632147 in words is "thirty-one billion, six hundred thirty-one million, six hundred thirty-two thousand, one hundred forty-seven".