343123621456354 has 4 divisors (see below), whose sum is σ = 514685432184534. Its totient is φ = 171561810728176.

The previous prime is 343123621456349. The next prime is 343123621456367. The reversal of 343123621456354 is 453654126321343.

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

It can be written as a sum of positive squares in only one way, i.e., 260372851861329 + 82750769595025 = 16136073^2 + 9096745^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85780905364087 + ... + 85780905364090.

Almost surely, 2^{343123621456354} is an apocalyptic number.

343123621456354 is a deficient number, since it is larger than the sum of its proper divisors (171561810728180).

343123621456354 is a wasteful number, since it uses less digits than its factorization.

343123621456354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171561810728179.

The product of its digits is 18662400, while the sum is 52.

Adding to 343123621456354 its reverse (453654126321343), we get a palindrome (796777747777697).

The spelling of 343123621456354 in words is "three hundred forty-three trillion, one hundred twenty-three billion, six hundred twenty-one million, four hundred fifty-six thousand, three hundred fifty-four".