348340681 has 24 divisors (see below), whose sum is σ = 403048520. Its totient is φ = 299252448.

The previous prime is 348340667. The next prime is 348340687. The reversal of 348340681 is 186043843.

It is the 7620-th star number.

It can be written as a sum of positive squares in 4 ways, for example, as 76387600 + 271953081 = 8740^2 + 16491^2 .

It is not a de Polignac number, because 348340681 - 2²³ = 339952073 is a prime.

It is a super-2 number, since 2×348340681² = 242682460079087522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 348340681.

It is not an unprimeable number, because it can be changed into a prime (348340687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9414595 + ... + 9414631.

Almost surely, 2^348340681 is an apocalyptic number.

It is an amenable number.

348340681 is a deficient number, since it is larger than the sum of its proper divisors (54707839).

348340681 is an frugal number, since it uses more digits than its factorization.

348340681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 348340681 is about 18663.8870817416. The cubic root of 348340681 is about 703.6144212887.

The spelling of 348340681 in words is "three hundred forty-eight million, three hundred forty thousand, six hundred eighty-one".