31343223412 has 12 divisors (see below), whose sum is σ = 57235451616. Its totient is φ = 14990237240.

The previous prime is 31343223409. The next prime is 31343223427. The reversal of 31343223412 is 21432234313.

It is a happy number.

It is a super-3 number, since 3×31343223412³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170343514 + ... + 170343697.

It is an arithmetic number, because the mean of its divisors is an integer number (4769620968).

Almost surely, 2^31343223412 is an apocalyptic number.

It is an amenable number.

31343223412 is a deficient number, since it is larger than the sum of its proper divisors (25892228204).

31343223412 is a wasteful number, since it uses less digits than its factorization.

31343223412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340687238 (or 340687236 counting only the distinct ones).

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

Adding to 31343223412 its reverse (21432234313), we get a palindrome (52775457725).

The spelling of 31343223412 in words is "thirty-one billion, three hundred forty-three million, two hundred twenty-three thousand, four hundred twelve".