1023544431103 has 4 divisors (see below), whose sum is σ = 1023854693400. Its totient is φ = 1023234168808.

The previous prime is 1023544431071. The next prime is 1023544431113. The reversal of 1023544431103 is 3011344453201.

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 1023544431103 - 2⁵ = 1023544431071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023544431113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155126200 + ... + 155132797.

It is an arithmetic number, because the mean of its divisors is an integer number (255963673350).

Almost surely, 2^{1023544431103} is an apocalyptic number.

1023544431103 is a deficient number, since it is larger than the sum of its proper divisors (310262297).

1023544431103 is an equidigital number, since it uses as much as digits as its factorization.

1023544431103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310262296.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 1023544431103 its reverse (3011344453201), we get a palindrome (4034888884304).

The spelling of 1023544431103 in words is "one trillion, twenty-three billion, five hundred forty-four million, four hundred thirty-one thousand, one hundred three".