343145312505 has 24 divisors (see below), whose sum is σ = 595054149768. Its totient is φ = 182928082176.

The previous prime is 343145312473. The next prime is 343145312513. The reversal of 343145312505 is 505213541343.

343145312505 is a `hidden beast` number, since 3 + 4 + 3 + 145 + 3 + 1 + 2 + 505 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 192241033209 + 150904279296 = 438453^2 + 388464^2 .

It is not a de Polignac number, because 343145312505 - 2⁵ = 343145312473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 343145312505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1623292 + ... + 1822461.

It is an arithmetic number, because the mean of its divisors is an integer number (24793922907).

Almost surely, 2^343145312505 is an apocalyptic number.

It is an amenable number.

343145312505 is a deficient number, since it is larger than the sum of its proper divisors (251908837263).

343145312505 is a wasteful number, since it uses less digits than its factorization.

343145312505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3447977 (or 3447974 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 343145312505 its reverse (505213541343), we get a palindrome (848358853848).

The spelling of 343145312505 in words is "three hundred forty-three billion, one hundred forty-five million, three hundred twelve thousand, five hundred five".