100331689 has 2 divisors, whose sum is σ = 100331690. Its totient is φ = 100331688.

The previous prime is 100331669. The next prime is 100331701. The reversal of 100331689 is 986133001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72590400 + 27741289 = 8520^2 + 5267^2 .

It is a cyclic number.

It is not a de Polignac number, because 100331689 - 2⁵ = 100331657 is a prime.

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 100331689.

It is not a weakly prime, because it can be changed into another prime (100331639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50165844 + 50165845.

It is an arithmetic number, because the mean of its divisors is an integer number (50165845).

Almost surely, 2^100331689 is an apocalyptic number.

It is an amenable number.

100331689 is a deficient number, since it is larger than the sum of its proper divisors (1).

100331689 is an equidigital number, since it uses as much as digits as its factorization.

100331689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 100331689 is about 10016.5707205610. The cubic root of 100331689 is about 464.6715049947.

The spelling of 100331689 in words is "one hundred million, three hundred thirty-one thousand, six hundred eighty-nine".