103643434 has 4 divisors (see below), whose sum is σ = 155465154. Its totient is φ = 51821716.

The previous prime is 103643431. The next prime is 103643443. The reversal of 103643434 is 434346301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434346301 = 31 ⋅14011171.

It can be written as a sum of positive squares in only one way, i.e., 81993025 + 21650409 = 9055^2 + 4653^2 .

It is a super-2 number, since 2×103643434² = 21483922822624712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (103643431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25910857 + ... + 25910860.

Almost surely, 2^103643434 is an apocalyptic number.

103643434 is a deficient number, since it is larger than the sum of its proper divisors (51821720).

103643434 is an equidigital number, since it uses as much as digits as its factorization.

103643434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51821719.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 103643434 is about 10180.5419305654. The cubic root of 103643434 is about 469.7288824177.

Adding to 103643434 its reverse (434346301), we get a palindrome (537989735).

The spelling of 103643434 in words is "one hundred three million, six hundred forty-three thousand, four hundred thirty-four".