100203434 has 4 divisors (see below), whose sum is σ = 150305154. Its totient is φ = 50101716.

The previous prime is 100203427. The next prime is 100203463. The reversal of 100203434 is 434302001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434302001 = 7 ⋅62043143.

It can be written as a sum of positive squares in only one way, i.e., 98505625 + 1697809 = 9925^2 + 1303^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25050857 + ... + 25050860.

Almost surely, 2^100203434 is an apocalyptic number.

100203434 is a deficient number, since it is larger than the sum of its proper divisors (50101720).

100203434 is an equidigital number, since it uses as much as digits as its factorization.

100203434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50101719.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 100203434 is about 10010.1665320813. The cubic root of 100203434 is about 464.4734224920.

Adding to 100203434 its reverse (434302001), we get a palindrome (534505435).

The spelling of 100203434 in words is "one hundred million, two hundred three thousand, four hundred thirty-four".