31145344354112 has 56 divisors (see below), whose sum is σ = 63805470397440. Its totient is φ = 15068497466880.

The previous prime is 31145344354087. The next prime is 31145344354141. The reversal of 31145344354112 is 21145344354113.

It is a self number, because there is not a number n which added to its sum of digits gives 31145344354112.

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, 15456473 + ... + 17354919.

Almost surely, 2^{31145344354112} is an apocalyptic number.

31145344354112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31145344354112 is an abundant number, since it is smaller than the sum of its proper divisors (32660126043328).

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

31145344354112 is a wasteful number, since it uses less digits than its factorization.

31145344354112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906759 (or 1906749 counting only the distinct ones).

The product of its digits is 345600, while the sum is 41.

Subtracting from 31145344354112 its reverse (21145344354113), we obtain a palindrome (9999999999999).

The spelling of 31145344354112 in words is "thirty-one trillion, one hundred forty-five billion, three hundred forty-four million, three hundred fifty-four thousand, one hundred twelve".