31002271344 has 160 divisors (see below), whose sum is σ = 97309486080. Its totient is φ = 9372211200.

The previous prime is 31002271337. The next prime is 31002271373. The reversal of 31002271344 is 44317220013.

It is a happy number.

31002271344 is a `hidden beast` number, since 310 + 0 + 2 + 2 + 7 + 1 + 344 = 666.

It is a super-2 number, since 2×31002271344² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2040544 + ... + 2055680.

It is an arithmetic number, because the mean of its divisors is an integer number (608184288).

Almost surely, 2^31002271344 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 31002271344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48654743040).

31002271344 is an abundant number, since it is smaller than the sum of its proper divisors (66307214736).

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

31002271344 is a wasteful number, since it uses less digits than its factorization.

31002271344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15596 (or 15584 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

Adding to 31002271344 its reverse (44317220013), we get a palindrome (75319491357).

The spelling of 31002271344 in words is "thirty-one billion, two million, two hundred seventy-one thousand, three hundred forty-four".