31944477120 has 112 divisors (see below), whose sum is σ = 101568930720. Its totient is φ = 8506331136.

The previous prime is 31944477119. The next prime is 31944477127. The reversal of 31944477120 is 2177444913.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31944477127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 657174 + ... + 704106.

Almost surely, 2^31944477120 is an apocalyptic number.

31944477120 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 31944477120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50784465360).

31944477120 is an abundant number, since it is smaller than the sum of its proper divisors (69624453600).

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

31944477120 is a wasteful number, since it uses less digits than its factorization.

31944477120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47662 (or 47652 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The spelling of 31944477120 in words is "thirty-one billion, nine hundred forty-four million, four hundred seventy-seven thousand, one hundred twenty".