160031220 has 24 divisors (see below), whose sum is σ = 448087584. Its totient is φ = 42674976.

The previous prime is 160031147. The next prime is 160031227. The reversal of 160031220 is 22130061.

160031220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 160031220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160031227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1333534 + ... + 1333653.

It is an arithmetic number, because the mean of its divisors is an integer number (18670316).

Almost surely, 2^160031220 is an apocalyptic number.

160031220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

160031220 is an abundant number, since it is smaller than the sum of its proper divisors (288056364).

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

160031220 is a wasteful number, since it uses less digits than its factorization.

160031220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2667199 (or 2667197 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 160031220 is about 12650.3446593364. The cubic root of 160031220 is about 542.9188310718.

Adding to 160031220 its reverse (22130061), we get a palindrome (182161281).

The spelling of 160031220 in words is "one hundred sixty million, thirty-one thousand, two hundred twenty".