339148681 has 4 divisors (see below), whose sum is σ = 341109252. Its totient is φ = 337188112.

The previous prime is 339148661. The next prime is 339148687. The reversal of 339148681 is 186841933.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 186841933 = 487 ⋅383659.

It can be written as a sum of positive squares in 2 ways, for example, as 318979600 + 20169081 = 17860^2 + 4491^2 .

It is a cyclic number.

It is not a de Polignac number, because 339148681 - 2⁷ = 339148553 is a prime.

It is a super-2 number, since 2×339148681² = 230043655648079522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (339148687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 980026 + ... + 980371.

It is an arithmetic number, because the mean of its divisors is an integer number (85277313).

Almost surely, 2^339148681 is an apocalyptic number.

It is an amenable number.

339148681 is a deficient number, since it is larger than the sum of its proper divisors (1960571).

339148681 is a wasteful number, since it uses less digits than its factorization.

339148681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960570.

The product of its digits is 124416, while the sum is 43.

The square root of 339148681 is about 18415.9898186332. The cubic root of 339148681 is about 697.3701875984.

The spelling of 339148681 in words is "three hundred thirty-nine million, one hundred forty-eight thousand, six hundred eighty-one".