31330244653644 has 12 divisors (see below), whose sum is σ = 73103904191864. Its totient is φ = 10443414884544.

The previous prime is 31330244653541. The next prime is 31330244653649. The reversal of 31330244653644 is 44635644203313.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 31330244653593 and 31330244653602.

It is not an unprimeable number, because it can be changed into a prime (31330244653649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1305426860557 + ... + 1305426860580.

Almost surely, 2^{31330244653644} is an apocalyptic number.

It is an amenable number.

31330244653644 is an abundant number, since it is smaller than the sum of its proper divisors (41773659538220).

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

31330244653644 is a wasteful number, since it uses less digits than its factorization.

31330244653644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610853721144 (or 2610853721142 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 48.

Adding to 31330244653644 its reverse (44635644203313), we get a palindrome (75965888856957).

The spelling of 31330244653644 in words is "thirty-one trillion, three hundred thirty billion, two hundred forty-four million, six hundred fifty-three thousand, six hundred forty-four".