31300020200 has 48 divisors (see below), whose sum is σ = 73769465580. Its totient is φ = 12348495360.

The previous prime is 31300020187. The next prime is 31300020209. The reversal of 31300020200 is 202000313.

It can be written as a sum of positive squares in 6 ways, for example, as 13343484196 + 17956536004 = 115514^2 + 134002^2 .

It is not an unprimeable number, because it can be changed into a prime (31300020209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1057319 + ... + 1086518.

Almost surely, 2^31300020200 is an apocalyptic number.

It is an amenable number.

31300020200 is an abundant number, since it is smaller than the sum of its proper divisors (42469445380).

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

31300020200 is a wasteful number, since it uses less digits than its factorization.

31300020200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143926 (or 2143917 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

Adding to 31300020200 its reverse (202000313), we get a palindrome (31502020513).

The spelling of 31300020200 in words is "thirty-one billion, three hundred million, twenty thousand, two hundred".