331041091 has 4 divisors (see below), whose sum is σ = 331705000. Its totient is φ = 330377184.

The previous prime is 331041089. The next prime is 331041131. The reversal of 331041091 is 190140133.

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

It is a cyclic number.

It is not a de Polignac number, because 331041091 - 2¹ = 331041089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331041791) 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, 331206 + ... + 332203.

It is an arithmetic number, because the mean of its divisors is an integer number (82926250).

Almost surely, 2^331041091 is an apocalyptic number.

331041091 is a deficient number, since it is larger than the sum of its proper divisors (663909).

331041091 is an equidigital number, since it uses as much as digits as its factorization.

331041091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663908.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 331041091 is about 18194.5346464261. The cubic root of 331041091 is about 691.7682651226.

The spelling of 331041091 in words is "three hundred thirty-one million, forty-one thousand, ninety-one".