31003112212 has 24 divisors (see below), whose sum is σ = 57118137440. Its totient is φ = 14683848480.

The previous prime is 31003112159. The next prime is 31003112213. The reversal of 31003112212 is 21221130013.

It is a super-2 number, since 2×31003112212² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31003112213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 734218 + ... + 775294.

Almost surely, 2^31003112212 is an apocalyptic number.

It is an amenable number.

31003112212 is a deficient number, since it is larger than the sum of its proper divisors (26115025228).

31003112212 is a wasteful number, since it uses less digits than its factorization.

31003112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51031 (or 51029 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31003112212 its reverse (21221130013), we get a palindrome (52224242225).

The spelling of 31003112212 in words is "thirty-one billion, three million, one hundred twelve thousand, two hundred twelve".