31110203212 has 48 divisors (see below), whose sum is σ = 61471872000. Its totient is φ = 13646346560.

The previous prime is 31110203207. The next prime is 31110203219. The reversal of 31110203212 is 21230201113.

It is not an unprimeable number, because it can be changed into a prime (31110203219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3056043 + ... + 3066205.

It is an arithmetic number, because the mean of its divisors is an integer number (1280664000).

Almost surely, 2^31110203212 is an apocalyptic number.

It is an amenable number.

31110203212 is a deficient number, since it is larger than the sum of its proper divisors (30361668788).

31110203212 is a wasteful number, since it uses less digits than its factorization.

31110203212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12606 (or 12604 counting only the distinct ones).

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

Adding to 31110203212 its reverse (21230201113), we get a palindrome (52340404325).

The spelling of 31110203212 in words is "thirty-one billion, one hundred ten million, two hundred three thousand, two hundred twelve".