31150534142205 has 24 divisors (see below), whose sum is σ = 54178539950808. Its totient is φ = 16556916433536.

The previous prime is 31150534142177. The next prime is 31150534142267. The reversal of 31150534142205 is 50224143505113.

31150534142205 is a `hidden beast` number, since 3 + 1 + 1 + 505 + 3 + 4 + 142 + 2 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 17349115961529 + 13801418180676 = 4165227^2 + 3715026^2 .

It is not a de Polignac number, because 31150534142205 - 2¹⁵ = 31150534109437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31150534142205.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 1181273662 + ... + 1181300031.

It is an arithmetic number, because the mean of its divisors is an integer number (2257439164617).

Almost surely, 2^{31150534142205} is an apocalyptic number.

It is an amenable number.

31150534142205 is a deficient number, since it is larger than the sum of its proper divisors (23028005808603).

31150534142205 is a wasteful number, since it uses less digits than its factorization.

31150534142205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2362573997 (or 2362573994 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 31150534142205 its reverse (50224143505113), we get a palindrome (81374677647318).

The spelling of 31150534142205 in words is "thirty-one trillion, one hundred fifty billion, five hundred thirty-four million, one hundred forty-two thousand, two hundred five".