1023112001993 has 2 divisors, whose sum is σ = 1023112001994. Its totient is φ = 1023112001992.

The previous prime is 1023112001939. The next prime is 1023112002001. The reversal of 1023112001993 is 3991002113201.

It is a happy number.

Together with previous prime (1023112001939) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 933565628944 + 89546373049 = 966212^2 + 299243^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023112001993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1023112001903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511556000996 + 511556000997.

It is an arithmetic number, because the mean of its divisors is an integer number (511556000997).

Almost surely, 2^{1023112001993} is an apocalyptic number.

It is an amenable number.

1023112001993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023112001993 is an equidigital number, since it uses as much as digits as its factorization.

1023112001993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 1023112001993 in words is "one trillion, twenty-three billion, one hundred twelve million, one thousand, nine hundred ninety-three".