31544512105 has 8 divisors (see below), whose sum is σ = 37919021832. Its totient is φ = 25191871488.

The previous prime is 31544512091. The next prime is 31544512159. The reversal of 31544512105 is 50121544513.

It can be written as a sum of positive squares in 4 ways, for example, as 2823753321 + 28720758784 = 53139^2 + 169472^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31544512105 - 2²⁹ = 31007641193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5464102 + ... + 5469871.

It is an arithmetic number, because the mean of its divisors is an integer number (4739877729).

Almost surely, 2^31544512105 is an apocalyptic number.

It is an amenable number.

31544512105 is a deficient number, since it is larger than the sum of its proper divisors (6374509727).

31544512105 is a wasteful number, since it uses less digits than its factorization.

31544512105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10934555.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 31544512105 in words is "thirty-one billion, five hundred forty-four million, five hundred twelve thousand, one hundred five".