391296343 has 2 divisors, whose sum is σ = 391296344. Its totient is φ = 391296342.

The previous prime is 391296331. The next prime is 391296359. The reversal of 391296343 is 343692193.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 391296343 - 2²⁵ = 357741911 is a prime.

It is a super-2 number, since 2×391296343² = 306225656090347298, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 391296296 and 391296305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (391296383) 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 as a sum of consecutive naturals, namely, 195648171 + 195648172.

It is an arithmetic number, because the mean of its divisors is an integer number (195648172).

Almost surely, 2^391296343 is an apocalyptic number.

391296343 is a deficient number, since it is larger than the sum of its proper divisors (1).

391296343 is an equidigital number, since it uses as much as digits as its factorization.

391296343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 40.

The square root of 391296343 is about 19781.2118688416. The cubic root of 391296343 is about 731.4229722257.

The spelling of 391296343 in words is "three hundred ninety-one million, two hundred ninety-six thousand, three hundred forty-three".