31313134312 has 16 divisors (see below), whose sum is σ = 58760151840. Its totient is φ = 15643760496.

The previous prime is 31313134301. The next prime is 31313134313. The reversal of 31313134312 is 21343131313.

It is not an unprimeable number, because it can be changed into a prime (31313134313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1590438 + ... + 1610005.

It is an arithmetic number, because the mean of its divisors is an integer number (3672509490).

Almost surely, 2^31313134312 is an apocalyptic number.

It is an amenable number.

31313134312 is a deficient number, since it is larger than the sum of its proper divisors (27447017528).

31313134312 is a wasteful number, since it uses less digits than its factorization.

31313134312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3201672 (or 3201668 counting only the distinct ones).

The product of its digits is 1944, while the sum is 25.

Adding to 31313134312 its reverse (21343131313), we get a palindrome (52656265625).

The spelling of 31313134312 in words is "thirty-one billion, three hundred thirteen million, one hundred thirty-four thousand, three hundred twelve".