1023115435123 has 4 divisors (see below), whose sum is σ = 1048069470168. Its totient is φ = 998161400080.

The previous prime is 1023115435039. The next prime is 1023115435189. The reversal of 1023115435123 is 3215345113201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1023115435123 - 2¹⁷ = 1023115304051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1023115415123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12477017461 + ... + 12477017542.

It is an arithmetic number, because the mean of its divisors is an integer number (262017367542).

Almost surely, 2^{1023115435123} is an apocalyptic number.

1023115435123 is a deficient number, since it is larger than the sum of its proper divisors (24954035045).

1023115435123 is an equidigital number, since it uses as much as digits as its factorization.

1023115435123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24954035044.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 1023115435123 in words is "one trillion, twenty-three billion, one hundred fifteen million, four hundred thirty-five thousand, one hundred twenty-three".