100321139 has 2 divisors, whose sum is σ = 100321140. Its totient is φ = 100321138.

The previous prime is 100321099. The next prime is 100321141. The reversal of 100321139 is 931123001.

It is a strong prime.

It is an emirp because it is prime and its reverse (931123001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100321139 is a prime.

Together with 100321141, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100321139.

It is not a weakly prime, because it can be changed into another prime (100321189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50160569 + 50160570.

It is an arithmetic number, because the mean of its divisors is an integer number (50160570).

Almost surely, 2^100321139 is an apocalyptic number.

100321139 is a deficient number, since it is larger than the sum of its proper divisors (1).

100321139 is an equidigital number, since it uses as much as digits as its factorization.

100321139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 100321139 is about 10016.0440793758. The cubic root of 100321139 is about 464.6552174978.

The spelling of 100321139 in words is "one hundred million, three hundred twenty-one thousand, one hundred thirty-nine".