691342343 has 2 divisors, whose sum is σ = 691342344. Its totient is φ = 691342342.

The previous prime is 691342331. The next prime is 691342363. The reversal of 691342343 is 343243196.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 691342343 - 2⁶ = 691342279 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (691342313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345671171 + 345671172.

It is an arithmetic number, because the mean of its divisors is an integer number (345671172).

Almost surely, 2^691342343 is an apocalyptic number.

691342343 is a deficient number, since it is larger than the sum of its proper divisors (1).

691342343 is an equidigital number, since it uses as much as digits as its factorization.

691342343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 35.

The square root of 691342343 is about 26293.3897206123. The cubic root of 691342343 is about 884.2282495004.

The spelling of 691342343 in words is "six hundred ninety-one million, three hundred forty-two thousand, three hundred forty-three".