331141091 has 2 divisors, whose sum is σ = 331141092. Its totient is φ = 331141090.

The previous prime is 331141087. The next prime is 331141117. The reversal of 331141091 is 190141133.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 331141091 - 2² = 331141087 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (331140091) 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 as a sum of consecutive naturals, namely, 165570545 + 165570546.

It is an arithmetic number, because the mean of its divisors is an integer number (165570546).

Almost surely, 2^331141091 is an apocalyptic number.

331141091 is a deficient number, since it is larger than the sum of its proper divisors (1).

331141091 is an equidigital number, since it uses as much as digits as its factorization.

331141091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 331141091 is about 18197.2825169035. The cubic root of 331141091 is about 691.8379139406.

The spelling of 331141091 in words is "three hundred thirty-one million, one hundred forty-one thousand, ninety-one".