31444234320 has 160 divisors (see below), whose sum is σ = 99470312064. Its totient is φ = 8214169600.

The previous prime is 31444234301. The next prime is 31444234321. The reversal of 31444234320 is 2343244413.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31444234321) 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, 10441615 + ... + 10444625.

Almost surely, 2^31444234320 is an apocalyptic number.

31444234320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31444234320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49735156032).

31444234320 is an abundant number, since it is smaller than the sum of its proper divisors (68026077744).

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

31444234320 is a wasteful number, since it uses less digits than its factorization.

31444234320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901 (or 3895 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 31444234320 its reverse (2343244413), we get a palindrome (33787478733).

The spelling of 31444234320 in words is "thirty-one billion, four hundred forty-four million, two hundred thirty-four thousand, three hundred twenty".