31506134147 has 2 divisors, whose sum is σ = 31506134148. Its totient is φ = 31506134146.

The previous prime is 31506134089. The next prime is 31506134161. The reversal of 31506134147 is 74143160513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31506134147 - 2⁸ = 31506133891 is a prime.

It is not a weakly prime, because it can be changed into another prime (31506134047) 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, 15753067073 + 15753067074.

It is an arithmetic number, because the mean of its divisors is an integer number (15753067074).

Almost surely, 2^31506134147 is an apocalyptic number.

31506134147 is a deficient number, since it is larger than the sum of its proper divisors (1).

31506134147 is an equidigital number, since it uses as much as digits as its factorization.

31506134147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 31506134147 in words is "thirty-one billion, five hundred six million, one hundred thirty-four thousand, one hundred forty-seven".