8655220131 has 4 divisors (see below), whose sum is σ = 11540293512. Its totient is φ = 5770146752.

The previous prime is 8655220097. The next prime is 8655220159. The reversal of 8655220131 is 1310225568.

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

It is a cyclic number.

It is not a de Polignac number, because 8655220131 - 2⁷ = 8655220003 is a prime.

It is a super-2 number, since 2×8655220131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8655220092 and 8655220101.

It is not an unprimeable number, because it can be changed into a prime (8655220631) 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, 1442536686 + ... + 1442536691.

It is an arithmetic number, because the mean of its divisors is an integer number (2885073378).

Almost surely, 2^8655220131 is an apocalyptic number.

8655220131 is a deficient number, since it is larger than the sum of its proper divisors (2885073381).

8655220131 is a wasteful number, since it uses less digits than its factorization.

8655220131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2885073380.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 8655220131 is about 93033.4355541060. The cubic root of 8655220131 is about 2053.1753392734.

Adding to 8655220131 its reverse (1310225568), we get a palindrome (9965445699).

The spelling of 8655220131 in words is "eight billion, six hundred fifty-five million, two hundred twenty thousand, one hundred thirty-one".