343939881 has 16 divisors (see below), whose sum is σ = 484761600. Its totient is φ = 216307728.

The previous prime is 343939867. The next prime is 343939927. The reversal of 343939881 is 188939343.

It is not a de Polignac number, because 343939881 - 2⁹ = 343939369 is a prime.

It is a super-2 number, since 2×343939881² = 236589283484588322, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 343939881.

It is not an unprimeable number, because it can be changed into a prime (343939811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1000 + ... + 26246.

It is an arithmetic number, because the mean of its divisors is an integer number (30297600).

Almost surely, 2^343939881 is an apocalyptic number.

It is an amenable number.

343939881 is a deficient number, since it is larger than the sum of its proper divisors (140821719).

343939881 is a wasteful number, since it uses less digits than its factorization.

343939881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25508.

The product of its digits is 559872, while the sum is 48.

The square root of 343939881 is about 18545.6162205520. The cubic root of 343939881 is about 700.6387917171.

The spelling of 343939881 in words is "three hundred forty-three million, nine hundred thirty-nine thousand, eight hundred eighty-one".