1023344453491 has 2 divisors, whose sum is σ = 1023344453492. Its totient is φ = 1023344453490.

The previous prime is 1023344453447. The next prime is 1023344453519. The reversal of 1023344453491 is 1943544433201.

It is a happy number.

1023344453491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1023344453491 - 2⁹ = 1023344452979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1023344453291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511672226745 + 511672226746.

It is an arithmetic number, because the mean of its divisors is an integer number (511672226746).

Almost surely, 2^{1023344453491} is an apocalyptic number.

1023344453491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023344453491 is an equidigital number, since it uses as much as digits as its factorization.

1023344453491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 43.

Adding to 1023344453491 its reverse (1943544433201), we get a palindrome (2966888886692).

The spelling of 1023344453491 in words is "one trillion, twenty-three billion, three hundred forty-four million, four hundred fifty-three thousand, four hundred ninety-one".