345131443 has 4 divisors (see below), whose sum is σ = 348548688. Its totient is φ = 341714200.

The previous prime is 345131441. The next prime is 345131453. The reversal of 345131443 is 344131543.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 345131443 - 2¹ = 345131441 is a prime.

It is a super-3 number, since 3×345131443³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345131441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1708471 + ... + 1708672.

It is an arithmetic number, because the mean of its divisors is an integer number (87137172).

Almost surely, 2^345131443 is an apocalyptic number.

345131443 is a deficient number, since it is larger than the sum of its proper divisors (3417245).

345131443 is a wasteful number, since it uses less digits than its factorization.

345131443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3417244.

The product of its digits is 8640, while the sum is 28.

The square root of 345131443 is about 18577.7136106680. The cubic root of 345131443 is about 701.4469681396.

Adding to 345131443 its reverse (344131543), we get a palindrome (689262986).

The spelling of 345131443 in words is "three hundred forty-five million, one hundred thirty-one thousand, four hundred forty-three".