8020232081 has 4 divisors (see below), whose sum is σ = 8021687664. Its totient is φ = 8018776500.

The previous prime is 8020232071. The next prime is 8020232111. The reversal of 8020232081 is 1802320208.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8020232081 is a prime.

It is a super-2 number, since 2×8020232081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8020232081.

It is not an unprimeable number, because it can be changed into a prime (8020232021) 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, 719495 + ... + 730556.

It is an arithmetic number, because the mean of its divisors is an integer number (2005421916).

Almost surely, 2^8020232081 is an apocalyptic number.

It is an amenable number.

8020232081 is a deficient number, since it is larger than the sum of its proper divisors (1455583).

8020232081 is a wasteful number, since it uses less digits than its factorization.

8020232081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455582.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 8020232081 is about 89555.7484531283. The cubic root of 8020232081 is about 2001.6845874342.

Adding to 8020232081 its reverse (1802320208), we get a palindrome (9822552289).

The spelling of 8020232081 in words is "eight billion, twenty million, two hundred thirty-two thousand, eighty-one".