100213403 has 4 divisors (see below), whose sum is σ = 100288080. Its totient is φ = 100138728.

The previous prime is 100213363. The next prime is 100213409. The reversal of 100213403 is 304312001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100213403 is a prime.

It is a super-2 number, since 2×100213403² = 20085452281680818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100213409) 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, 35288 + ... + 38021.

It is an arithmetic number, because the mean of its divisors is an integer number (25072020).

Almost surely, 2^100213403 is an apocalyptic number.

100213403 is a deficient number, since it is larger than the sum of its proper divisors (74677).

100213403 is an equidigital number, since it uses as much as digits as its factorization.

100213403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74676.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 100213403 is about 10010.6644634610. The cubic root of 100213403 is about 464.4888250979.

Adding to 100213403 its reverse (304312001), we get a palindrome (404525404).

The spelling of 100213403 in words is "one hundred million, two hundred thirteen thousand, four hundred three".