31440323113332 has 48 divisors (see below), whose sum is σ = 83841167703552. Its totient is φ = 8982916668000.

The previous prime is 31440323113327. The next prime is 31440323113391. The reversal of 31440323113332 is 23331132304413.

It is a happy number.

It is a super-2 number, since 2×31440323113332² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31440323113293 and 31440323113302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31352707 + ... + 32339957.

It is an arithmetic number, because the mean of its divisors is an integer number (1746690993824).

Almost surely, 2^{31440323113332} is an apocalyptic number.

It is an amenable number.

31440323113332 is an abundant number, since it is smaller than the sum of its proper divisors (52400844590220).

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

31440323113332 is a wasteful number, since it uses less digits than its factorization.

31440323113332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366388 (or 1366386 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 33.

Adding to 31440323113332 its reverse (23331132304413), we get a palindrome (54771455417745).

The spelling of 31440323113332 in words is "thirty-one trillion, four hundred forty billion, three hundred twenty-three million, one hundred thirteen thousand, three hundred thirty-two".