231520751107 has 2 divisors, whose sum is σ = 231520751108. Its totient is φ = 231520751106.

The previous prime is 231520751047. The next prime is 231520751117. The reversal of 231520751107 is 701157025132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231520751107 is a prime.

It is not a weakly prime, because it can be changed into another prime (231520751117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115760375553 + 115760375554.

It is an arithmetic number, because the mean of its divisors is an integer number (115760375554).

Almost surely, 2^231520751107 is an apocalyptic number.

231520751107 is a deficient number, since it is larger than the sum of its proper divisors (1).

231520751107 is an equidigital number, since it uses as much as digits as its factorization.

231520751107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14700, while the sum is 34.

Adding to 231520751107 its reverse (701157025132), we get a palindrome (932677776239).

The spelling of 231520751107 in words is "two hundred thirty-one billion, five hundred twenty million, seven hundred fifty-one thousand, one hundred seven".