23031020551529 has 2 divisors, whose sum is σ = 23031020551530. Its totient is φ = 23031020551528.

The previous prime is 23031020551489. The next prime is 23031020551541. The reversal of 23031020551529 is 92515502013032.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22925681357929 + 105339193600 = 4788077^2 + 324560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23031020551529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23031020551492 and 23031020551501.

It is not a weakly prime, because it can be changed into another prime (23031020557529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11515510275764 + 11515510275765.

It is an arithmetic number, because the mean of its divisors is an integer number (11515510275765).

Almost surely, 2^{23031020551529} is an apocalyptic number.

It is an amenable number.

23031020551529 is a deficient number, since it is larger than the sum of its proper divisors (1).

23031020551529 is an equidigital number, since it uses as much as digits as its factorization.

23031020551529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 23031020551529 in words is "twenty-three trillion, thirty-one billion, twenty million, five hundred fifty-one thousand, five hundred twenty-nine".