20300123231 has 4 divisors (see below), whose sum is σ = 20302807872. Its totient is φ = 20297438592.

The previous prime is 20300123213. The next prime is 20300123243. The reversal of 20300123231 is 13232100302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13232100302 = 2 ⋅6616050151.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20300123231 is a prime.

It is a super-2 number, since 2×20300123231² (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 (20300123251) 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, 1330946 + ... + 1346111.

It is an arithmetic number, because the mean of its divisors is an integer number (5075701968).

Almost surely, 2^20300123231 is an apocalyptic number.

20300123231 is a deficient number, since it is larger than the sum of its proper divisors (2684641).

20300123231 is an equidigital number, since it uses as much as digits as its factorization.

20300123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684640.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20300123231 its reverse (13232100302), we get a palindrome (33532223533).

The spelling of 20300123231 in words is "twenty billion, three hundred million, one hundred twenty-three thousand, two hundred thirty-one".