23243431537 has 2 divisors, whose sum is σ = 23243431538. Its totient is φ = 23243431536.

The previous prime is 23243431513. The next prime is 23243431573. The reversal of 23243431537 is 73513434232.

Together with next prime (23243431573) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18781057936 + 4462373601 = 137044^2 + 66801^2 .

It is a cyclic number.

It is not a de Polignac number, because 23243431537 - 2¹⁵ = 23243398769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23243431496 and 23243431505.

It is not a weakly prime, because it can be changed into another prime (23243431507) 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 as a sum of consecutive naturals, namely, 11621715768 + 11621715769.

It is an arithmetic number, because the mean of its divisors is an integer number (11621715769).

Almost surely, 2^23243431537 is an apocalyptic number.

It is an amenable number.

23243431537 is a deficient number, since it is larger than the sum of its proper divisors (1).

23243431537 is an equidigital number, since it uses as much as digits as its factorization.

23243431537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 37.

Adding to 23243431537 its reverse (73513434232), we get a palindrome (96756865769).

The spelling of 23243431537 in words is "twenty-three billion, two hundred forty-three million, four hundred thirty-one thousand, five hundred thirty-seven".