23287543231 has 2 divisors, whose sum is σ = 23287543232. Its totient is φ = 23287543230.

The previous prime is 23287543207. The next prime is 23287543243. The reversal of 23287543231 is 13234578232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23287543231 - 2¹¹ = 23287541183 is a prime.

It is a super-2 number, since 2×23287543231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23287543831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11643771615 + 11643771616.

It is an arithmetic number, because the mean of its divisors is an integer number (11643771616).

Almost surely, 2^23287543231 is an apocalyptic number.

23287543231 is a deficient number, since it is larger than the sum of its proper divisors (1).

23287543231 is an equidigital number, since it uses as much as digits as its factorization.

23287543231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 40.

The spelling of 23287543231 in words is "twenty-three billion, two hundred eighty-seven million, five hundred forty-three thousand, two hundred thirty-one".