100000403 has 6 divisors (see below), whose sum is σ = 101010612. Its totient is φ = 99000200.

The previous prime is 100000399. The next prime is 100000421. The reversal of 100000403 is 304000001.

It is not a de Polignac number, because 100000403 - 2² = 100000399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100000463) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5300 + ... + 15102.

It is an arithmetic number, because the mean of its divisors is an integer number (16835102).

Almost surely, 2^100000403 is an apocalyptic number.

100000403 is a deficient number, since it is larger than the sum of its proper divisors (1010209).

100000403 is an frugal number, since it uses more digits than its factorization.

100000403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10005 (or 9904 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 100000403 is about 10000.0201499797. The cubic root of 100000403 is about 464.1595068805.

Adding to 100000403 its reverse (304000001), we get a palindrome (404000404).

The spelling of 100000403 in words is "one hundred million, four hundred three", and thus it is an aban number.