326130681 has 4 divisors (see below), whose sum is σ = 434840912. Its totient is φ = 217420452.

The previous prime is 326130653. The next prime is 326130689. The reversal of 326130681 is 186031623.

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 not a de Polignac number, because 326130681 - 2⁹ = 326130169 is a prime.

It is a super-2 number, since 2×326130681² = 212722442179047522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (326130689) 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, 54355111 + ... + 54355116.

It is an arithmetic number, because the mean of its divisors is an integer number (108710228).

Almost surely, 2^326130681 is an apocalyptic number.

It is an amenable number.

326130681 is a deficient number, since it is larger than the sum of its proper divisors (108710231).

326130681 is a wasteful number, since it uses less digits than its factorization.

326130681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108710230.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 326130681 is about 18059.0885982654. The cubic root of 326130681 is about 688.3308256912.

The spelling of 326130681 in words is "three hundred twenty-six million, one hundred thirty thousand, six hundred eighty-one".