31545034109 has 2 divisors, whose sum is σ = 31545034110. Its totient is φ = 31545034108.

The previous prime is 31545034043. The next prime is 31545034123. The reversal of 31545034109 is 90143054513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21858144025 + 9686890084 = 147845^2 + 98422^2 .

It is a cyclic number.

It is not a de Polignac number, because 31545034109 - 2²⁰ = 31543985533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31545034309) 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, 15772517054 + 15772517055.

It is an arithmetic number, because the mean of its divisors is an integer number (15772517055).

Almost surely, 2^31545034109 is an apocalyptic number.

It is an amenable number.

31545034109 is a deficient number, since it is larger than the sum of its proper divisors (1).

31545034109 is an equidigital number, since it uses as much as digits as its factorization.

31545034109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 31545034109 in words is "thirty-one billion, five hundred forty-five million, thirty-four thousand, one hundred nine".