31425263243244 has 72 divisors (see below), whose sum is σ = 85653886652880. Its totient is φ = 9657179517312.

The previous prime is 31425263243191. The next prime is 31425263243267. The reversal of 31425263243244 is 44234236252413.

31425263243244 is a `hidden beast` number, since 3 + 1 + 4 + 2 + 5 + 2 + 632 + 4 + 3 + 2 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 31425263243244.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41752474 + ... + 42498465.

Almost surely, 2^{31425263243244} is an apocalyptic number.

It is an amenable number.

31425263243244 is an abundant number, since it is smaller than the sum of its proper divisors (54228623409636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31425263243244 is a wasteful number, since it uses less digits than its factorization.

31425263243244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84251759 (or 84251754 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 45.

Adding to 31425263243244 its reverse (44234236252413), we get a palindrome (75659499495657).

The spelling of 31425263243244 in words is "thirty-one trillion, four hundred twenty-five billion, two hundred sixty-three million, two hundred forty-three thousand, two hundred forty-four".