331042591 has 8 divisors (see below), whose sum is σ = 361638864. Its totient is φ = 300529920.

The previous prime is 331042463. The next prime is 331042631. The reversal of 331042591 is 195240133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 331042591 - 2⁷ = 331042463 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 (331042891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12466 + ... + 28591.

It is an arithmetic number, because the mean of its divisors is an integer number (45204858).

Almost surely, 2^331042591 is an apocalyptic number.

331042591 is a deficient number, since it is larger than the sum of its proper divisors (30596273).

331042591 is a wasteful number, since it uses less digits than its factorization.

331042591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41801.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 331042591 is about 18194.5758675491. The cubic root of 331042591 is about 691.7693099585.

The spelling of 331042591 in words is "three hundred thirty-one million, forty-two thousand, five hundred ninety-one".