100432331 has 4 divisors (see below), whose sum is σ = 100496664. Its totient is φ = 100368000.

The previous prime is 100432303. The next prime is 100432333. The reversal of 100432331 is 133234001.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 100432331 - 2²⁶ = 33323467 is a prime.

It is a super-2 number, since 2×100432331² = 20173306220187122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100432333) 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, 29765 + ... + 32966.

It is an arithmetic number, because the mean of its divisors is an integer number (25124166).

Almost surely, 2^100432331 is an apocalyptic number.

100432331 is a deficient number, since it is larger than the sum of its proper divisors (64333).

100432331 is an equidigital number, since it uses as much as digits as its factorization.

100432331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64332.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 100432331 is about 10021.5932366066. The cubic root of 100432331 is about 464.8268226286.

Adding to 100432331 its reverse (133234001), we get a palindrome (233666332).

The spelling of 100432331 in words is "one hundred million, four hundred thirty-two thousand, three hundred thirty-one".