31003122212 has 24 divisors (see below), whose sum is σ = 54719991480. Its totient is φ = 15369269760.

The previous prime is 31003122193. The next prime is 31003122221. The reversal of 31003122212 is 21222130013.

It can be written as a sum of positive squares in 4 ways, for example, as 49646116 + 30953476096 = 7046^2 + 175936^2 .

It is a super-2 number, since 2×31003122212² (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 7 ways as a sum of consecutive naturals, for example, 235964 + ... + 343052.

It is an arithmetic number, because the mean of its divisors is an integer number (2279999645).

Almost surely, 2^31003122212 is an apocalyptic number.

It is an amenable number.

31003122212 is a deficient number, since it is larger than the sum of its proper divisors (23716869268).

31003122212 is a wasteful number, since it uses less digits than its factorization.

31003122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107711 (or 107709 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31003122212 its reverse (21222130013), we get a palindrome (52225252225).

The spelling of 31003122212 in words is "thirty-one billion, three million, one hundred twenty-two thousand, two hundred twelve".