1023403404403 has 4 divisors (see below), whose sum is σ = 1083603604680. Its totient is φ = 963203204128.

The previous prime is 1023403404377. The next prime is 1023403404469. The reversal of 1023403404403 is 3044043043201.

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 1023403404403 - 2⁵ = 1023403404371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1023403404503) 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, 30100100113 + ... + 30100100146.

It is an arithmetic number, because the mean of its divisors is an integer number (270900901170).

Almost surely, 2^{1023403404403} is an apocalyptic number.

1023403404403 is a deficient number, since it is larger than the sum of its proper divisors (60200200277).

1023403404403 is an equidigital number, since it uses as much as digits as its factorization.

1023403404403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60200200276.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 1023403404403 its reverse (3044043043201), we get a palindrome (4067446447604).

The spelling of 1023403404403 in words is "one trillion, twenty-three billion, four hundred three million, four hundred four thousand, four hundred three".