348656781 has 16 divisors (see below), whose sum is σ = 511334208. Its totient is φ = 211304720.

The previous prime is 348656779. The next prime is 348656797. The reversal of 348656781 is 187656843.

It is not a de Polignac number, because 348656781 - 2¹ = 348656779 is a prime.

It is a super-2 number, since 2×348656781² = 243123101874563922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 348656781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (348656741) 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 15 ways as a sum of consecutive naturals, for example, 39666 + ... + 47651.

It is an arithmetic number, because the mean of its divisors is an integer number (31958388).

Almost surely, 2^348656781 is an apocalyptic number.

It is an amenable number.

348656781 is a deficient number, since it is larger than the sum of its proper divisors (162677427).

348656781 is an equidigital number, since it uses as much as digits as its factorization.

348656781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87353 (or 87331 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 348656781 is about 18672.3533867587. The cubic root of 348656781 is about 703.8271874004.

The spelling of 348656781 in words is "three hundred forty-eight million, six hundred fifty-six thousand, seven hundred eighty-one".