1023123401103 has 4 divisors (see below), whose sum is σ = 1364164534808. Its totient is φ = 682082267400.

The previous prime is 1023123401057. The next prime is 1023123401117. The reversal of 1023123401103 is 3011043213201.

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

It is not a de Polignac number, because 1023123401103 - 2⁸ = 1023123400847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1023123401103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023123401123) 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, 170520566848 + ... + 170520566853.

It is an arithmetic number, because the mean of its divisors is an integer number (341041133702).

Almost surely, 2^{1023123401103} is an apocalyptic number.

1023123401103 is a deficient number, since it is larger than the sum of its proper divisors (341041133705).

1023123401103 is an equidigital number, since it uses as much as digits as its factorization.

1023123401103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341041133704.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1023123401103 its reverse (3011043213201), we get a palindrome (4034166614304).

The spelling of 1023123401103 in words is "one trillion, twenty-three billion, one hundred twenty-three million, four hundred one thousand, one hundred three".