23231212330321 has 2 divisors, whose sum is σ = 23231212330322. Its totient is φ = 23231212330320.

The previous prime is 23231212330307. The next prime is 23231212330327. The reversal of 23231212330321 is 12303321213232.

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., 22050903913921 + 1180308416400 = 4695839^2 + 1086420^2 .

It is a cyclic number.

It is not a de Polignac number, because 23231212330321 - 2²¹ = 23231210233169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23231212330321.

It is not a weakly prime, because it can be changed into another prime (23231212330327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11615606165160 + 11615606165161.

It is an arithmetic number, because the mean of its divisors is an integer number (11615606165161).

Almost surely, 2^{23231212330321} is an apocalyptic number.

It is an amenable number.

23231212330321 is a deficient number, since it is larger than the sum of its proper divisors (1).

23231212330321 is an equidigital number, since it uses as much as digits as its factorization.

23231212330321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 23231212330321 its reverse (12303321213232), we get a palindrome (35534533543553).

The spelling of 23231212330321 in words is "twenty-three trillion, two hundred thirty-one billion, two hundred twelve million, three hundred thirty thousand, three hundred twenty-one".