31001000200 has 48 divisors (see below), whose sum is σ = 72536490180. Its totient is φ = 12321404160.

The previous prime is 31001000189. The next prime is 31001000213. The reversal of 31001000200 is 200010013.

It can be written as a sum of positive squares in 6 ways, for example, as 2122076356 + 28878923844 = 46066^2 + 169938^2 .

It is a super-2 number, since 2×31001000200² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 462247 + ... + 525046.

Almost surely, 2^31001000200 is an apocalyptic number.

It is an amenable number.

31001000200 is an abundant number, since it is smaller than the sum of its proper divisors (41535489980).

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

31001000200 is a wasteful number, since it uses less digits than its factorization.

31001000200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987466 (or 987457 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

Adding to 31001000200 its reverse (200010013), we get a palindrome (31201010213).

The spelling of 31001000200 in words is "thirty-one billion, one million, two hundred", and thus it is an aban number.