213031312012 has 12 divisors (see below), whose sum is σ = 373227004696. Its totient is φ = 106395024960.

The previous prime is 213031312009. The next prime is 213031312121. The reversal of 213031312012 is 210213130312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30153789 + ... + 30160852.

Almost surely, 2^213031312012 is an apocalyptic number.

It is an amenable number.

213031312012 is a deficient number, since it is larger than the sum of its proper divisors (160195692684).

213031312012 is a wasteful number, since it uses less digits than its factorization.

213031312012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60315528 (or 60315526 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 213031312012 its reverse (210213130312), we get a palindrome (423244442324).

The spelling of 213031312012 in words is "two hundred thirteen billion, thirty-one million, three hundred twelve thousand, twelve".