201100323409 has 2 divisors, whose sum is σ = 201100323410. Its totient is φ = 201100323408.

The previous prime is 201100323407. The next prime is 201100323421. The reversal of 201100323409 is 904323001102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177322683409 + 23777640000 = 421097^2 + 154200^2 .

It is a cyclic number.

It is not a de Polignac number, because 201100323409 - 2¹ = 201100323407 is a prime.

Together with 201100323407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (201100323407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100550161704 + 100550161705.

It is an arithmetic number, because the mean of its divisors is an integer number (100550161705).

Almost surely, 2^201100323409 is an apocalyptic number.

It is an amenable number.

201100323409 is a deficient number, since it is larger than the sum of its proper divisors (1).

201100323409 is an equidigital number, since it uses as much as digits as its factorization.

201100323409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 201100323409 in words is "two hundred one billion, one hundred million, three hundred twenty-three thousand, four hundred nine".