100343591 has 2 divisors, whose sum is σ = 100343592. Its totient is φ = 100343590.

The previous prime is 100343587. The next prime is 100343609. The reversal of 100343591 is 195343001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100343591 - 2² = 100343587 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100343591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100343501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50171795 + 50171796.

It is an arithmetic number, because the mean of its divisors is an integer number (50171796).

Almost surely, 2^100343591 is an apocalyptic number.

100343591 is a deficient number, since it is larger than the sum of its proper divisors (1).

100343591 is an equidigital number, since it uses as much as digits as its factorization.

100343591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 100343591 is about 10017.1648184504. The cubic root of 100343591 is about 464.6898783908.

Adding to 100343591 its reverse (195343001), we get a palindrome (295686592).

The spelling of 100343591 in words is "one hundred million, three hundred forty-three thousand, five hundred ninety-one".