31320310310112 has 48 divisors (see below), whose sum is σ = 82217704423680. Its totient is φ = 10439863454592.

The previous prime is 31320310310089. The next prime is 31320310310129. The reversal of 31320310310112 is 21101301302313.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 473023 + ... + 7928705.

It is an arithmetic number, because the mean of its divisors is an integer number (1712868842160).

Almost surely, 2^{31320310310112} is an apocalyptic number.

31320310310112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31320310310112 is an abundant number, since it is smaller than the sum of its proper divisors (50897394113568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31320310310112 is a wasteful number, since it uses less digits than its factorization.

31320310310112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7499455 (or 7499447 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31320310310112 its reverse (21101301302313), we get a palindrome (52421611612425).

The spelling of 31320310310112 in words is "thirty-one trillion, three hundred twenty billion, three hundred ten million, three hundred ten thousand, one hundred twelve".