31332013144240 has 40 divisors (see below), whose sum is σ = 77132044126080. Its totient is φ = 11795581418496.

The previous prime is 31332013144217. The next prime is 31332013144279. The reversal of 31332013144240 is 4244131023313.

It is a tau number, because it is divible by the number of its divisors (40).

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, 11519121120 + ... + 11519123839.

It is an arithmetic number, because the mean of its divisors is an integer number (1928301103152).

Almost surely, 2^{31332013144240} is an apocalyptic number.

It is an amenable number.

31332013144240 is an abundant number, since it is smaller than the sum of its proper divisors (45800030981840).

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

31332013144240 is a wasteful number, since it uses less digits than its factorization.

31332013144240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23038244989 (or 23038244983 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 31332013144240 its reverse (4244131023313), we get a palindrome (35576144167553).

The spelling of 31332013144240 in words is "thirty-one trillion, three hundred thirty-two billion, thirteen million, one hundred forty-four thousand, two hundred forty".