20302212231 has 24 divisors (see below), whose sum is σ = 34014990464. Its totient is φ = 11428108560.

The previous prime is 20302212223. The next prime is 20302212241. The reversal of 20302212231 is 13221220302.

It is not a de Polignac number, because 20302212231 - 2³ = 20302212223 is a prime.

It is a super-2 number, since 2×20302212231² (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 (20302212241) 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 23 ways as a sum of consecutive naturals, for example, 2400685 + ... + 2409126.

Almost surely, 2^20302212231 is an apocalyptic number.

20302212231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20302212231 is a deficient number, since it is larger than the sum of its proper divisors (13712778233).

20302212231 is a wasteful number, since it uses less digits than its factorization.

20302212231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4809891 (or 4809888 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20302212231 its reverse (13221220302), we get a palindrome (33523432533).

The spelling of 20302212231 in words is "twenty billion, three hundred two million, two hundred twelve thousand, two hundred thirty-one".