343956959281 has 4 divisors (see below), whose sum is σ = 370415186932. Its totient is φ = 317498731632.

The previous prime is 343956959251. The next prime is 343956959347. The reversal of 343956959281 is 182959659343.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39517861681 + 304439097600 = 198791^2 + 551760^2 .

It is a cyclic number.

It is not a de Polignac number, because 343956959281 - 2⁵ = 343956959249 is a prime.

It is a super-2 number, since 2×343956959281² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343956959251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13229113806 + ... + 13229113831.

It is an arithmetic number, because the mean of its divisors is an integer number (92603796733).

Almost surely, 2^343956959281 is an apocalyptic number.

It is an amenable number.

343956959281 is a deficient number, since it is larger than the sum of its proper divisors (26458227651).

343956959281 is a wasteful number, since it uses less digits than its factorization.

343956959281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26458227650.

The product of its digits is 62985600, while the sum is 64.

The spelling of 343956959281 in words is "three hundred forty-three billion, nine hundred fifty-six million, nine hundred fifty-nine thousand, two hundred eighty-one".