31312043305245 has 48 divisors (see below), whose sum is σ = 55296635904432. Its totient is φ = 16388089804800.

The previous prime is 31312043305189. The next prime is 31312043305247. The reversal of 31312043305245 is 54250334021313.

31312043305245 is a `hidden beast` number, since 3 + 1 + 3 + 120 + 4 + 3 + 3 + 0 + 524 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 4670279732889 + 26641763572356 = 2161083^2 + 5161566^2 .

It is not a de Polignac number, because 31312043305245 - 2¹⁴ = 31312043288861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312043305247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29970214 + ... + 30997383.

It is an arithmetic number, because the mean of its divisors is an integer number (1152013248009).

Almost surely, 2^{31312043305245} is an apocalyptic number.

It is an amenable number.

31312043305245 is a deficient number, since it is larger than the sum of its proper divisors (23984592599187).

31312043305245 is a wasteful number, since it uses less digits than its factorization.

31312043305245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60967822 (or 60967819 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 31312043305245 its reverse (54250334021313), we get a palindrome (85562377326558).

The spelling of 31312043305245 in words is "thirty-one trillion, three hundred twelve billion, forty-three million, three hundred five thousand, two hundred forty-five".