4031223140 has 72 divisors (see below), whose sum is σ = 9880516800. Its totient is φ = 1377528768.

The previous prime is 4031223127. The next prime is 4031223143. The reversal of 4031223140 is 413221304.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (4031223143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 294161 + ... + 307559.

It is an arithmetic number, because the mean of its divisors is an integer number (137229400).

Almost surely, 2^4031223140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4031223140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4940258400).

4031223140 is an abundant number, since it is smaller than the sum of its proper divisors (5849293660).

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

4031223140 is a wasteful number, since it uses less digits than its factorization.

4031223140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13729 (or 13720 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 4031223140 is about 63491.9139733557. The cubic root of 4031223140 is about 1591.5206553499.

Adding to 4031223140 its reverse (413221304), we get a palindrome (4444444444).

The spelling of 4031223140 in words is "four billion, thirty-one million, two hundred twenty-three thousand, one hundred forty".