31313023132112 has 10 divisors (see below), whose sum is σ = 60668982318498. Its totient is φ = 15656511566048.

The previous prime is 31313023132081. The next prime is 31313023132117. The reversal of 31313023132112 is 21123132031313.

It can be written as a sum of positive squares in only one way, i.e., 23234945029696 + 8078078102416 = 4820264^2 + 2842196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31313023132117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978531972863 + ... + 978531972894.

Almost surely, 2^{31313023132112} is an apocalyptic number.

It is an amenable number.

31313023132112 is a deficient number, since it is larger than the sum of its proper divisors (29355959186386).

31313023132112 is a wasteful number, since it uses less digits than its factorization.

31313023132112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957063945765 (or 1957063945759 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 31313023132112 its reverse (21123132031313), we get a palindrome (52436155163425).

The spelling of 31313023132112 in words is "thirty-one trillion, three hundred thirteen billion, twenty-three million, one hundred thirty-two thousand, one hundred twelve".