31013444100 has 144 divisors (see below), whose sum is σ = 91116945920. Its totient is φ = 8143027200.

The previous prime is 31013444071. The next prime is 31013444107. The reversal of 31013444100 is 144431013.

It is not an unprimeable number, because it can be changed into a prime (31013444107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21702186 + ... + 21703614.

Almost surely, 2^31013444100 is an apocalyptic number.

31013444100 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 31013444100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45558472960).

31013444100 is an abundant number, since it is smaller than the sum of its proper divisors (60103501820).

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

31013444100 is a wasteful number, since it uses less digits than its factorization.

31013444100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510 (or 2503 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31013444100 its reverse (144431013), we get a palindrome (31157875113).

The spelling of 31013444100 in words is "thirty-one billion, thirteen million, four hundred forty-four thousand, one hundred".