432521103 has 16 divisors (see below), whose sum is σ = 659874560. Its totient is φ = 246856896.

The previous prime is 432521099. The next prime is 432521143. The reversal of 432521103 is 301125234.

It is not a de Polignac number, because 432521103 - 2² = 432521099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 432521103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (432521143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6051 + ... + 30027.

It is an arithmetic number, because the mean of its divisors is an integer number (41242160).

Almost surely, 2^432521103 is an apocalyptic number.

432521103 is a deficient number, since it is larger than the sum of its proper divisors (227353457).

432521103 is a wasteful number, since it uses less digits than its factorization.

432521103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24846.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 432521103 is about 20797.1417026475. The cubic root of 432521103 is about 756.2564655049.

Adding to 432521103 its reverse (301125234), we get a palindrome (733646337).

The spelling of 432521103 in words is "four hundred thirty-two million, five hundred twenty-one thousand, one hundred three".