31234343212 has 6 divisors (see below), whose sum is σ = 54660100628. Its totient is φ = 15617171604.

The previous prime is 31234343201. The next prime is 31234343213. The reversal of 31234343212 is 21234343213.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31234343213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3904292898 + ... + 3904292905.

Almost surely, 2^31234343212 is an apocalyptic number.

It is an amenable number.

31234343212 is a deficient number, since it is larger than the sum of its proper divisors (23425757416).

31234343212 is a wasteful number, since it uses less digits than its factorization.

31234343212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7808585807 (or 7808585805 counting only the distinct ones).

The product of its digits is 10368, while the sum is 28.

Adding to 31234343212 its reverse (21234343213), we get a palindrome (52468686425).

Subtracting from 31234343212 its reverse (21234343213), we obtain a palindrome (9999999999).

The spelling of 31234343212 in words is "thirty-one billion, two hundred thirty-four million, three hundred forty-three thousand, two hundred twelve".