31234342312 has 16 divisors (see below), whose sum is σ = 58578916500. Its totient is φ = 15613297920.

The previous prime is 31234342297. The next prime is 31234342351. The reversal of 31234342312 is 21324343213.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30734998596 + 499343716 = 175314^2 + 22346^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449739 + ... + 514522.

Almost surely, 2^31234342312 is an apocalyptic number.

It is an amenable number.

31234342312 is a deficient number, since it is larger than the sum of its proper divisors (27344574188).

31234342312 is a wasteful number, since it uses less digits than its factorization.

31234342312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968316 (or 968312 counting only the distinct ones).

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

Adding to 31234342312 its reverse (21324343213), we get a palindrome (52558685525).

Subtracting from 31234342312 its reverse (21324343213), we obtain a palindrome (9909999099).

The spelling of 31234342312 in words is "thirty-one billion, two hundred thirty-four million, three hundred forty-two thousand, three hundred twelve".