348687381 has 12 divisors (see below), whose sum is σ = 540821472. Its totient is φ = 199249848.

The previous prime is 348687359. The next prime is 348687389. The reversal of 348687381 is 183786843.

It is not a de Polignac number, because 348687381 - 2⁹ = 348686869 is a prime.

It is a super-2 number, since 2×348687381² = 243165779337278322, 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 348687381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (348687389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1185865 + ... + 1186158.

It is an arithmetic number, because the mean of its divisors is an integer number (45068456).

Almost surely, 2^348687381 is an apocalyptic number.

It is an amenable number.

348687381 is a deficient number, since it is larger than the sum of its proper divisors (192134091).

348687381 is a wasteful number, since it uses less digits than its factorization.

348687381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372040 (or 2372033 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 348687381 is about 18673.1727620134. The cubic root of 348687381 is about 703.8477773551.

The spelling of 348687381 in words is "three hundred forty-eight million, six hundred eighty-seven thousand, three hundred eighty-one".