31120320332312 has 8 divisors (see below), whose sum is σ = 58350600623100. Its totient is φ = 15560160166152.

The previous prime is 31120320332287. The next prime is 31120320332369. The reversal of 31120320332312 is 21323302302113.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×31120320332312² (a number of 28 digits) contains 22 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 (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1945020020762 + ... + 1945020020777.

Almost surely, 2^{31120320332312} is an apocalyptic number.

It is an amenable number.

31120320332312 is a deficient number, since it is larger than the sum of its proper divisors (27230280290788).

31120320332312 is a wasteful number, since it uses less digits than its factorization.

31120320332312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3890040041545 (or 3890040041541 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 31120320332312 its reverse (21323302302113), we get a palindrome (52443622634425).

The spelling of 31120320332312 in words is "thirty-one trillion, one hundred twenty billion, three hundred twenty million, three hundred thirty-two thousand, three hundred twelve".