100000203403 has 4 divisors (see below), whose sum is σ = 103226016448. Its totient is φ = 96774390360.

The previous prime is 100000203397. The next prime is 100000203409. The reversal of 100000203403 is 304302000001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304302000001 = 2251 ⋅135185251.

It is an interprime number because it is at equal distance from previous prime (100000203397) and next prime (100000203409).

It is a cyclic number.

It is not a de Polignac number, because 100000203403 - 2²¹ = 99998106251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100000203409) 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, 1612906476 + ... + 1612906537.

It is an arithmetic number, because the mean of its divisors is an integer number (25806504112).

Almost surely, 2^100000203403 is an apocalyptic number.

100000203403 is a deficient number, since it is larger than the sum of its proper divisors (3225813045).

100000203403 is an equidigital number, since it uses as much as digits as its factorization.

100000203403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3225813044.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 100000203403 its reverse (304302000001), we get a palindrome (404302203404).

The spelling of 100000203403 in words is "one hundred billion, two hundred three thousand, four hundred three".