4020513223 has 4 divisors (see below), whose sum is σ = 4159151640. Its totient is φ = 3881874808.

The previous prime is 4020513197. The next prime is 4020513239. The reversal of 4020513223 is 3223150204.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4020513223 - 2²¹ = 4018416071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4020513194 and 4020513203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020513283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69319165 + ... + 69319222.

It is an arithmetic number, because the mean of its divisors is an integer number (1039787910).

Almost surely, 2^4020513223 is an apocalyptic number.

4020513223 is a deficient number, since it is larger than the sum of its proper divisors (138638417).

4020513223 is a wasteful number, since it uses less digits than its factorization.

4020513223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138638416.

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

The square root of 4020513223 is about 63407.5170859102. The cubic root of 4020513223 is about 1590.1099857992.

Adding to 4020513223 its reverse (3223150204), we get a palindrome (7243663427).

The spelling of 4020513223 in words is "four billion, twenty million, five hundred thirteen thousand, two hundred twenty-three".