331109189 has 4 divisors (see below), whose sum is σ = 340058124. Its totient is φ = 322160256.

The previous prime is 331109183. The next prime is 331109197. The reversal of 331109189 is 981901133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 218537089 + 112572100 = 14783^2 + 10610^2 .

It is a cyclic number.

It is not a de Polignac number, because 331109189 - 2⁸ = 331108933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331109183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4474412 + ... + 4474485.

It is an arithmetic number, because the mean of its divisors is an integer number (85014531).

Almost surely, 2^331109189 is an apocalyptic number.

It is an amenable number.

331109189 is a deficient number, since it is larger than the sum of its proper divisors (8948935).

331109189 is an equidigital number, since it uses as much as digits as its factorization.

331109189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8948934.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 331109189 is about 18196.4059363381. The cubic root of 331109189 is about 691.8156960980.

The spelling of 331109189 in words is "three hundred thirty-one million, one hundred nine thousand, one hundred eighty-nine".