31440402443104 has 36 divisors (see below), whose sum is σ = 63243298351044. Its totient is φ = 15385728820544.

The previous prime is 31440402443039. The next prime is 31440402443147. The reversal of 31440402443104 is 40134420404413.

It is a self number, because there is not a number n which added to its sum of digits gives 31440402443104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 222317854 + ... + 222459229.

It is an arithmetic number, because the mean of its divisors is an integer number (1756758287529).

Almost surely, 2^{31440402443104} is an apocalyptic number.

It is an amenable number.

31440402443104 is an abundant number, since it is smaller than the sum of its proper divisors (31802895907940).

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

31440402443104 is an equidigital number, since it uses as much as digits as its factorization.

31440402443104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444777187 (or 444777132 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 31440402443104 its reverse (40134420404413), we get a palindrome (71574822847517).

The spelling of 31440402443104 in words is "thirty-one trillion, four hundred forty billion, four hundred two million, four hundred forty-three thousand, one hundred four".