331314091 has 2 divisors, whose sum is σ = 331314092. Its totient is φ = 331314090.

The previous prime is 331314089. The next prime is 331314107. The reversal of 331314091 is 190413133.

It is a weak prime.

It is an emirp because it is prime and its reverse (190413133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331314091 - 2¹ = 331314089 is a prime.

Together with 331314089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (331314491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165657045 + 165657046.

It is an arithmetic number, because the mean of its divisors is an integer number (165657046).

Almost surely, 2^331314091 is an apocalyptic number.

331314091 is a deficient number, since it is larger than the sum of its proper divisors (1).

331314091 is an equidigital number, since it uses as much as digits as its factorization.

331314091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 331314091 is about 18202.0353532236. The cubic root of 331314091 is about 691.9583732910.

The spelling of 331314091 in words is "three hundred thirty-one million, three hundred fourteen thousand, ninety-one".