31003212200 has 24 divisors (see below), whose sum is σ = 72082468830. Its totient is φ = 12401284800.

The previous prime is 31003212199. The next prime is 31003212221. The reversal of 31003212200 is 221230013.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 27651033796 + 3352178404 = 166286^2 + 57898^2 .

It is a super-2 number, since 2×31003212200² (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 (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77507831 + ... + 77508230.

Almost surely, 2^31003212200 is an apocalyptic number.

It is an amenable number.

31003212200 is an abundant number, since it is smaller than the sum of its proper divisors (41079256630).

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

31003212200 is a wasteful number, since it uses less digits than its factorization.

31003212200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155016077 (or 155016068 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 31003212200 its reverse (221230013), we get a palindrome (31224442213).

The spelling of 31003212200 in words is "thirty-one billion, three million, two hundred twelve thousand, two hundred".