103221432 has 64 divisors (see below), whose sum is σ = 289332000. Its totient is φ = 34094592.

The previous prime is 103221431. The next prime is 103221439. The reversal of 103221432 is 234122301.

103221432 is a `hidden beast` number, since 10 + 3 + 221 + 432 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103221431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22294 + ... + 26522.

Almost surely, 2^103221432 is an apocalyptic number.

103221432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103221432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144666000).

103221432 is an abundant number, since it is smaller than the sum of its proper divisors (186110568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

103221432 is a wasteful number, since it uses less digits than its factorization.

103221432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4357 (or 4347 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 103221432 is about 10159.7948798192. The cubic root of 103221432 is about 469.0904879784.

Adding to 103221432 its reverse (234122301), we get a palindrome (337343733).

The spelling of 103221432 in words is "one hundred three million, two hundred twenty-one thousand, four hundred thirty-two".