10203430403 has 4 divisors (see below), whose sum is σ = 10204049568. Its totient is φ = 10202811240.

The previous prime is 10203430399. The next prime is 10203430417. The reversal of 10203430403 is 30403430201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30403430201 = 197 ⋅154332133.

It is a cyclic number.

It is not a de Polignac number, because 10203430403 - 2² = 10203430399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10203430493) 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, 284168 + ... + 318053.

It is an arithmetic number, because the mean of its divisors is an integer number (2551012392).

Almost surely, 2^10203430403 is an apocalyptic number.

10203430403 is a deficient number, since it is larger than the sum of its proper divisors (619165).

10203430403 is an equidigital number, since it uses as much as digits as its factorization.

10203430403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619164.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 10203430403 its reverse (30403430201), we get a palindrome (40606860604).

The spelling of 10203430403 in words is "ten billion, two hundred three million, four hundred thirty thousand, four hundred three".