31550445120 has 112 divisors (see below), whose sum is σ = 100349840448. Its totient is φ = 8398571520.

The previous prime is 31550445097. The next prime is 31550445203. The reversal of 31550445120 is 2154405513.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519382 + ... + 576938.

Almost surely, 2^31550445120 is an apocalyptic number.

31550445120 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 31550445120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50174920224).

31550445120 is an abundant number, since it is smaller than the sum of its proper divisors (68799395328).

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

31550445120 is a wasteful number, since it uses less digits than its factorization.

31550445120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58148 (or 58138 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 31550445120 in words is "thirty-one billion, five hundred fifty million, four hundred forty-five thousand, one hundred twenty".