31214243213212 has 6 divisors (see below), whose sum is σ = 54624925623128. Its totient is φ = 15607121606604.

The previous prime is 31214243213173. The next prime is 31214243213213. The reversal of 31214243213212 is 21231234241213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31214243213213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3901780401648 + ... + 3901780401655.

Almost surely, 2^{31214243213212} is an apocalyptic number.

It is an amenable number.

31214243213212 is a deficient number, since it is larger than the sum of its proper divisors (23410682409916).

31214243213212 is a wasteful number, since it uses less digits than its factorization.

31214243213212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7803560803307 (or 7803560803305 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

Adding to 31214243213212 its reverse (21231234241213), we get a palindrome (52445477454425).

The spelling of 31214243213212 in words is "thirty-one trillion, two hundred fourteen billion, two hundred forty-three million, two hundred thirteen thousand, two hundred twelve".