1023153535321 has 2 divisors, whose sum is σ = 1023153535322. Its totient is φ = 1023153535320.

The previous prime is 1023153535319. The next prime is 1023153535331. The reversal of 1023153535321 is 1235353513201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 900838265625 + 122315269696 = 949125^2 + 349736^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023153535321 - 2¹ = 1023153535319 is a prime.

Together with 1023153535319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1023153535331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511576767660 + 511576767661.

It is an arithmetic number, because the mean of its divisors is an integer number (511576767661).

Almost surely, 2^{1023153535321} is an apocalyptic number.

It is an amenable number.

1023153535321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023153535321 is an equidigital number, since it uses as much as digits as its factorization.

1023153535321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40500, while the sum is 34.

The spelling of 1023153535321 in words is "one trillion, twenty-three billion, one hundred fifty-three million, five hundred thirty-five thousand, three hundred twenty-one".