31445042200245 has 24 divisors (see below), whose sum is σ = 54504918101400. Its totient is φ = 16770634315776.

The previous prime is 31445042200237. The next prime is 31445042200249. The reversal of 31445042200245 is 54200224054413.

31445042200245 is a `hidden beast` number, since 3 + 1 + 445 + 0 + 4 + 2 + 200 + 2 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 130643210916 + 31314398989329 = 361446^2 + 5595927^2 .

It is not a de Polignac number, because 31445042200245 - 2³ = 31445042200237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31445042200249) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15397701 + ... + 17319909.

It is an arithmetic number, because the mean of its divisors is an integer number (2271038254225).

Almost surely, 2^{31445042200245} is an apocalyptic number.

It is an amenable number.

31445042200245 is a deficient number, since it is larger than the sum of its proper divisors (23059875901155).

31445042200245 is a wasteful number, since it uses less digits than its factorization.

31445042200245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285749 (or 2285746 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 31445042200245 its reverse (54200224054413), we get a palindrome (85645266254658).

The spelling of 31445042200245 in words is "thirty-one trillion, four hundred forty-five billion, forty-two million, two hundred thousand, two hundred forty-five".