31361453522345 has 16 divisors (see below), whose sum is σ = 39881007346320. Its totient is φ = 23633189529600.

The previous prime is 31361453522341. The next prime is 31361453522389. The reversal of 31361453522345 is 54322535416313.

It can be written as a sum of positive squares in 8 ways, for example, as 2668247109529 + 28693206412816 = 1633477^2 + 5356604^2 .

It is not a de Polignac number, because 31361453522345 - 2² = 31361453522341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31361453522345.

It is not an unprimeable number, because it can be changed into a prime (31361453522341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2637626816 + ... + 2637638705.

It is an arithmetic number, because the mean of its divisors is an integer number (2492562959145).

Almost surely, 2^{31361453522345} is an apocalyptic number.

It is an amenable number.

31361453522345 is a deficient number, since it is larger than the sum of its proper divisors (8519553823975).

31361453522345 is a wasteful number, since it uses less digits than its factorization.

31361453522345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5275265596.

The product of its digits is 3888000, while the sum is 47.

Adding to 31361453522345 its reverse (54322535416313), we get a palindrome (85683988938658).

The spelling of 31361453522345 in words is "thirty-one trillion, three hundred sixty-one billion, four hundred fifty-three million, five hundred twenty-two thousand, three hundred forty-five".