345191543 has 2 divisors, whose sum is σ = 345191544. Its totient is φ = 345191542.

The previous prime is 345191531. The next prime is 345191549.

345191543 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345191543 is a prime.

It is a Sophie Germain prime.

It is equal to p_18559070 and since 345191543 and 18559070 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345191549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172595771 + 172595772.

It is an arithmetic number, because the mean of its divisors is an integer number (172595772).

Almost surely, 2^345191543 is an apocalyptic number.

345191543 is a deficient number, since it is larger than the sum of its proper divisors (1).

345191543 is an equidigital number, since it uses as much as digits as its factorization.

345191543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 35.

The square root of 345191543 is about 18579.3310697667. The cubic root of 345191543 is about 701.4876816289.

The spelling of 345191543 in words is "three hundred forty-five million, one hundred ninety-one thousand, five hundred forty-three".