354240671 has 2 divisors, whose sum is σ = 354240672. Its totient is φ = 354240670.

The previous prime is 354240647. The next prime is 354240673. The reversal of 354240671 is 176042453.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354240671 is a prime.

It is a super-3 number, since 3×354240671³ (a number of 27 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 354240673, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354240673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177120335 + 177120336.

It is an arithmetic number, because the mean of its divisors is an integer number (177120336).

Almost surely, 2^354240671 is an apocalyptic number.

354240671 is a deficient number, since it is larger than the sum of its proper divisors (1).

354240671 is an equidigital number, since it uses as much as digits as its factorization.

354240671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 354240671 is about 18821.2823952036. The cubic root of 354240671 is about 707.5646715513.

The spelling of 354240671 in words is "three hundred fifty-four million, two hundred forty thousand, six hundred seventy-one".