4020531223 has 8 divisors (see below), whose sum is σ = 4090568400. Its totient is φ = 3950557248.

The previous prime is 4020531211. The next prime is 4020531227. The reversal of 4020531223 is 3221350204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4020531223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4020531194 and 4020531203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020531227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123043 + ... + 152251.

It is an arithmetic number, because the mean of its divisors is an integer number (511321050).

Almost surely, 2^4020531223 is an apocalyptic number.

4020531223 is a deficient number, since it is larger than the sum of its proper divisors (70037177).

4020531223 is a wasteful number, since it uses less digits than its factorization.

4020531223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31601.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 4020531223 is about 63407.6590247582. The cubic root of 4020531223 is about 1590.1123587912.

Adding to 4020531223 its reverse (3221350204), we get a palindrome (7241881427).

The spelling of 4020531223 in words is "four billion, twenty million, five hundred thirty-one thousand, two hundred twenty-three".