2349681 has 4 divisors (see below), whose sum is σ = 3132912. Its totient is φ = 1566452.

The previous prime is 2349679. The next prime is 2349701. The reversal of 2349681 is 1869432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2349681 - 2¹ = 2349679 is a prime.

It is a super-2 number, since 2×2349681² = 11042001603522, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2349181) 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, 391611 + ... + 391616.

It is an arithmetic number, because the mean of its divisors is an integer number (783228).

2^2349681 is an apocalyptic number.

It is an amenable number.

2349681 is a deficient number, since it is larger than the sum of its proper divisors (783231).

2349681 is an equidigital number, since it uses as much as digits as its factorization.

2349681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783230.

The product of its digits is 10368, while the sum is 33.

The square root of 2349681 is about 1532.8669218168. The cubic root of 2349681 is about 132.9442734864.

Subtracting from 2349681 its reverse (1869432), we obtain a square (480249 = 693²).

The spelling of 2349681 in words is "two million, three hundred forty-nine thousand, six hundred eighty-one".