31120200312 has 32 divisors (see below), whose sum is σ = 77825287680. Its totient is φ = 10370095200.

The previous prime is 31120200283. The next prime is 31120200317. The reversal of 31120200312 is 21300202113.

It is a junction number, because it is equal to n+sod(n) for n = 31120200291 and 31120200300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31120200317) 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, 129064 + ... + 280887.

It is an arithmetic number, because the mean of its divisors is an integer number (2432040240).

Almost surely, 2^31120200312 is an apocalyptic number.

It is an amenable number.

31120200312 is an abundant number, since it is smaller than the sum of its proper divisors (46705087368).

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

31120200312 is a wasteful number, since it uses less digits than its factorization.

31120200312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413123 (or 413119 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31120200312 its reverse (21300202113), we get a palindrome (52420402425).

The spelling of 31120200312 in words is "thirty-one billion, one hundred twenty million, two hundred thousand, three hundred twelve".