20622417231 has 32 divisors (see below), whose sum is σ = 29786416128. Its totient is φ = 12616007040.

The previous prime is 20622417227. The next prime is 20622417247. The reversal of 20622417231 is 13271422602.

It is not a de Polignac number, because 20622417231 - 2² = 20622417227 is a prime.

It is a super-2 number, since 2×20622417231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20622417271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8063805 + ... + 8066361.

It is an arithmetic number, because the mean of its divisors is an integer number (930825504).

Almost surely, 2^20622417231 is an apocalyptic number.

20622417231 is a deficient number, since it is larger than the sum of its proper divisors (9163998897).

20622417231 is a wasteful number, since it uses less digits than its factorization.

20622417231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3711.

The product of its (nonzero) digits is 8064, while the sum is 30.

Adding to 20622417231 its reverse (13271422602), we get a palindrome (33893839833).

The spelling of 20622417231 in words is "twenty billion, six hundred twenty-two million, four hundred seventeen thousand, two hundred thirty-one".