20302100231 has 4 divisors (see below), whose sum is σ = 23202400272. Its totient is φ = 17401800192.

The previous prime is 20302100173. The next prime is 20302100233. The reversal of 20302100231 is 13200120302.

It is a happy number.

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

It is not a de Polignac number, because 20302100231 - 2¹⁸ = 20301838087 is a prime.

It is a super-2 number, since 2×20302100231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302100233) 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, 1450150010 + ... + 1450150023.

It is an arithmetic number, because the mean of its divisors is an integer number (5800600068).

Almost surely, 2^20302100231 is an apocalyptic number.

20302100231 is a deficient number, since it is larger than the sum of its proper divisors (2900300041).

20302100231 is an equidigital number, since it uses as much as digits as its factorization.

20302100231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2900300040.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20302100231 its reverse (13200120302), we get a palindrome (33502220533).

The spelling of 20302100231 in words is "twenty billion, three hundred two million, one hundred thousand, two hundred thirty-one".