31002212200 has 96 divisors (see below), whose sum is σ = 75973318200. Its totient is φ = 11747240960.

The previous prime is 31002212167. The next prime is 31002212221. The reversal of 31002212200 is 221220013.

It can be written as a sum of positive squares in 12 ways, for example, as 940894276 + 30061317924 = 30674^2 + 173382^2 .

It is a super-2 number, since 2×31002212200² (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 23 ways as a sum of consecutive naturals, for example, 256974 + ... + 357826.

Almost surely, 2^31002212200 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31002212200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37986659100).

31002212200 is an abundant number, since it is smaller than the sum of its proper divisors (44971106000).

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

31002212200 is a wasteful number, since it uses less digits than its factorization.

31002212200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100951 (or 100942 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 31002212200 its reverse (221220013), we get a palindrome (31223432213).

The spelling of 31002212200 in words is "thirty-one billion, two million, two hundred twelve thousand, two hundred".