31310242224440 has 16 divisors (see below), whose sum is σ = 70448045005080. Its totient is φ = 12524096889760.

The previous prime is 31310242224431. The next prime is 31310242224479. The reversal of 31310242224440 is 4442224201313.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31310242224397 and 31310242224406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391378027766 + ... + 391378027845.

Almost surely, 2^{31310242224440} is an apocalyptic number.

It is an amenable number.

31310242224440 is an abundant number, since it is smaller than the sum of its proper divisors (39137802780640).

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

31310242224440 is a wasteful number, since it uses less digits than its factorization.

31310242224440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782756055622 (or 782756055618 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 31310242224440 its reverse (4442224201313), we get a palindrome (35752466425753).

The spelling of 31310242224440 in words is "thirty-one trillion, three hundred ten billion, two hundred forty-two million, two hundred twenty-four thousand, four hundred forty".