31240113504400 has 30 divisors (see below), whose sum is σ = 75054372695282. Its totient is φ = 12496045401600.

The previous prime is 31240113504373. The next prime is 31240113504451. The reversal of 31240113504400 is 440531104213.

It can be written as a sum of positive squares in 3 ways, for example, as 281527870464 + 30958585633936 = 530592^2 + 5564044^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39050141481 + ... + 39050142280.

Almost surely, 2^{31240113504400} is an apocalyptic number.

It is an amenable number.

31240113504400 is an abundant number, since it is smaller than the sum of its proper divisors (43814259190882).

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

31240113504400 is a wasteful number, since it uses less digits than its factorization.

31240113504400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78100283779 (or 78100283768 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 31240113504400 its reverse (440531104213), we get a palindrome (31680644608613).

The spelling of 31240113504400 in words is "thirty-one trillion, two hundred forty billion, one hundred thirteen million, five hundred four thousand, four hundred".