31431100000244 has 96 divisors (see below), whose sum is σ = 65721892271616. Its totient is φ = 12859964282880.

The previous prime is 31431100000199. The next prime is 31431100000247. The reversal of 31431100000244 is 44200000113413.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31431100000247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 719867774 + ... + 719911434.

It is an arithmetic number, because the mean of its divisors is an integer number (684603044496).

Almost surely, 2^{31431100000244} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31431100000244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32860946135808).

31431100000244 is an abundant number, since it is smaller than the sum of its proper divisors (34290792271372).

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

31431100000244 is a wasteful number, since it uses less digits than its factorization.

31431100000244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45825 (or 45823 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 31431100000244 its reverse (44200000113413), we get a palindrome (75631100113657).

The spelling of 31431100000244 in words is "thirty-one trillion, four hundred thirty-one billion, one hundred million, two hundred forty-four", and thus it is an aban number.