100147321 has 4 divisors (see below), whose sum is σ = 100292944. Its totient is φ = 100001700.

The previous prime is 100147291. The next prime is 100147337. The reversal of 100147321 is 123741001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100147321 - 2⁷ = 100147193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100147351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71775 + ... + 73156.

It is an arithmetic number, because the mean of its divisors is an integer number (25073236).

Almost surely, 2^100147321 is an apocalyptic number.

It is an amenable number.

100147321 is a deficient number, since it is larger than the sum of its proper divisors (145623).

100147321 is an equidigital number, since it uses as much as digits as its factorization.

100147321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145622.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 100147321 is about 10007.3633390619. The cubic root of 100147321 is about 464.3867060239.

Adding to 100147321 its reverse (123741001), we get a palindrome (223888322).

The spelling of 100147321 in words is "one hundred million, one hundred forty-seven thousand, three hundred twenty-one".