231123105656623 has 2 divisors, whose sum is σ = 231123105656624. Its totient is φ = 231123105656622.

The previous prime is 231123105656561. The next prime is 231123105656647. The reversal of 231123105656623 is 326656501321132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231123105656623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231123105656683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115561552828311 + 115561552828312.

It is an arithmetic number, because the mean of its divisors is an integer number (115561552828312).

Almost surely, 2^{231123105656623} is an apocalyptic number.

231123105656623 is a deficient number, since it is larger than the sum of its proper divisors (1).

231123105656623 is an equidigital number, since it uses as much as digits as its factorization.

231123105656623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1166400, while the sum is 46.

Adding to 231123105656623 its reverse (326656501321132), we get a palindrome (557779606977755).

The spelling of 231123105656623 in words is "two hundred thirty-one trillion, one hundred twenty-three billion, one hundred five million, six hundred fifty-six thousand, six hundred twenty-three".