341991257 has 2 divisors, whose sum is σ = 341991258. Its totient is φ = 341991256.

The previous prime is 341991197. The next prime is 341991271. The reversal of 341991257 is 752199143.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311310736 + 30680521 = 17644^2 + 5539^2 .

It is an emirp because it is prime and its reverse (752199143) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-341991257 is a prime.

It is not a weakly prime, because it can be changed into another prime (341921257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170995628 + 170995629.

It is an arithmetic number, because the mean of its divisors is an integer number (170995629).

Almost surely, 2^341991257 is an apocalyptic number.

It is an amenable number.

341991257 is a deficient number, since it is larger than the sum of its proper divisors (1).

341991257 is an equidigital number, since it uses as much as digits as its factorization.

341991257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 41.

The square root of 341991257 is about 18493.0056237487. The cubic root of 341991257 is about 699.3131064601.

The spelling of 341991257 in words is "three hundred forty-one million, nine hundred ninety-one thousand, two hundred fifty-seven".