340184681 has 4 divisors (see below), whose sum is σ = 340396164. Its totient is φ = 339973200.

The previous prime is 340184657. The next prime is 340184693. The reversal of 340184681 is 186481043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 186481043 = 7 ⋅26640149.

It can be written as a sum of positive squares in 2 ways, for example, as 202920025 + 137264656 = 14245^2 + 11716^2 .

It is a cyclic number.

It is not a de Polignac number, because 340184681 - 2¹⁸ = 339922537 is a prime.

It is a super-2 number, since 2×340184681² = 231451234374143522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340184081) 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, 103310 + ... + 106551.

It is an arithmetic number, because the mean of its divisors is an integer number (85099041).

Almost surely, 2^340184681 is an apocalyptic number.

It is an amenable number.

340184681 is a deficient number, since it is larger than the sum of its proper divisors (211483).

340184681 is a wasteful number, since it uses less digits than its factorization.

340184681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211482.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 340184681 is about 18444.0961014629. The cubic root of 340184681 is about 698.0795530874.

The spelling of 340184681 in words is "three hundred forty million, one hundred eighty-four thousand, six hundred eighty-one".