31200113320 has 32 divisors (see below), whose sum is σ = 71390095200. Its totient is φ = 12268518208.

The previous prime is 31200113309. The next prime is 31200113327. The reversal of 31200113320 is 2331100213.

It is a junction number, because it is equal to n+sod(n) for n = 31200113294 and 31200113303.

It is not an unprimeable number, because it can be changed into a prime (31200113327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6607834 + ... + 6612553.

It is an arithmetic number, because the mean of its divisors is an integer number (2230940475).

Almost surely, 2^31200113320 is an apocalyptic number.

It is an amenable number.

31200113320 is an abundant number, since it is smaller than the sum of its proper divisors (40189981880).

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

31200113320 is a wasteful number, since it uses less digits than its factorization.

31200113320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13220457 (or 13220453 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31200113320 its reverse (2331100213), we get a palindrome (33531213533).

The spelling of 31200113320 in words is "thirty-one billion, two hundred million, one hundred thirteen thousand, three hundred twenty".