1123405437703 has 4 divisors (see below), whose sum is σ = 1124268932808. Its totient is φ = 1122541942600.

The previous prime is 1123405437701. The next prime is 1123405437769. The reversal of 1123405437703 is 3077345043211.

It is a happy number.

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 1123405437703 - 2¹ = 1123405437701 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 (1123405437701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431745601 + ... + 431748202.

It is an arithmetic number, because the mean of its divisors is an integer number (281067233202).

Almost surely, 2^{1123405437703} is an apocalyptic number.

1123405437703 is a deficient number, since it is larger than the sum of its proper divisors (863495105).

1123405437703 is an equidigital number, since it uses as much as digits as its factorization.

1123405437703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863495104.

The product of its (nonzero) digits is 211680, while the sum is 40.

The spelling of 1123405437703 in words is "one trillion, one hundred twenty-three billion, four hundred five million, four hundred thirty-seven thousand, seven hundred three".