331090871 has 4 divisors (see below), whose sum is σ = 331296744. Its totient is φ = 330885000.

The previous prime is 331090853. The next prime is 331090873. The reversal of 331090871 is 178090133.

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 331090871 - 2⁶ = 331090807 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 (331090873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100505 + ... + 103746.

It is an arithmetic number, because the mean of its divisors is an integer number (82824186).

Almost surely, 2^331090871 is an apocalyptic number.

331090871 is a deficient number, since it is larger than the sum of its proper divisors (205873).

331090871 is a wasteful number, since it uses less digits than its factorization.

331090871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205872.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 331090871 is about 18195.9025882202. The cubic root of 331090871 is about 691.8029380572.

The spelling of 331090871 in words is "three hundred thirty-one million, ninety thousand, eight hundred seventy-one".