23011320231 has 6 divisors (see below), whose sum is σ = 33238573680. Its totient is φ = 15340880148.

The previous prime is 23011320221. The next prime is 23011320239. The reversal of 23011320231 is 13202311032.

23011320231 is a `hidden beast` number, since 2 + 301 + 132 + 0 + 231 = 666.

It is not a de Polignac number, because 23011320231 - 2¹³ = 23011312039 is a prime.

It is a super-2 number, since 2×23011320231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23011320239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1278406671 + ... + 1278406688.

It is an arithmetic number, because the mean of its divisors is an integer number (5539762280).

Almost surely, 2^23011320231 is an apocalyptic number.

23011320231 is a deficient number, since it is larger than the sum of its proper divisors (10227253449).

23011320231 is a wasteful number, since it uses less digits than its factorization.

23011320231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2556813365 (or 2556813362 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23011320231 its reverse (13202311032), we get a palindrome (36213631263).

The spelling of 23011320231 in words is "twenty-three billion, eleven million, three hundred twenty thousand, two hundred thirty-one".