31444540100 has 36 divisors (see below), whose sum is σ = 68591943168. Its totient is φ = 12511956000.

The previous prime is 31444540097. The next prime is 31444540109. The reversal of 31444540100 is 104544413.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31444540100.

It is not an unprimeable number, because it can be changed into a prime (31444540109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 804056 + ... + 842255.

Almost surely, 2^31444540100 is an apocalyptic number.

It is an amenable number.

31444540100 is an abundant number, since it is smaller than the sum of its proper divisors (37147403068).

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

31444540100 is a wasteful number, since it uses less digits than its factorization.

31444540100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646516 (or 1646509 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The spelling of 31444540100 in words is "thirty-one billion, four hundred forty-four million, five hundred forty thousand, one hundred".