31003200212 has 24 divisors (see below), whose sum is σ = 54403309800. Its totient is φ = 15459457536.

The previous prime is 31003200187. The next prime is 31003200301. The reversal of 31003200212 is 21200230013.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5080268176 + 25922932036 = 71276^2 + 161006^2 .

It is a super-2 number, since 2×31003200212² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2287568 + ... + 2301080.

It is an arithmetic number, because the mean of its divisors is an integer number (2266804575).

Almost surely, 2^31003200212 is an apocalyptic number.

It is an amenable number.

31003200212 is a deficient number, since it is larger than the sum of its proper divisors (23400109588).

31003200212 is a wasteful number, since it uses less digits than its factorization.

31003200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15035 (or 15033 counting only the distinct ones).

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

Adding to 31003200212 its reverse (21200230013), we get a palindrome (52203430225).

The spelling of 31003200212 in words is "thirty-one billion, three million, two hundred thousand, two hundred twelve".