326344405 has 4 divisors (see below), whose sum is σ = 391613292. Its totient is φ = 261075520.

The previous prime is 326344391. The next prime is 326344423. The reversal of 326344405 is 504443623.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504443623 = 41 ⋅12303503.

It can be written as a sum of positive squares in 2 ways, for example, as 165714129 + 160630276 = 12873^2 + 12674^2 .

It is not a de Polignac number, because 326344405 - 2²⁷ = 192126677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32634436 + ... + 32634445.

It is an arithmetic number, because the mean of its divisors is an integer number (97903323).

Almost surely, 2^326344405 is an apocalyptic number.

It is an amenable number.

326344405 is a deficient number, since it is larger than the sum of its proper divisors (65268887).

326344405 is an equidigital number, since it uses as much as digits as its factorization.

326344405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65268886.

The product of its (nonzero) digits is 34560, while the sum is 31.

The square root of 326344405 is about 18065.0049820087. The cubic root of 326344405 is about 688.4811546869.

The spelling of 326344405 in words is "three hundred twenty-six million, three hundred forty-four thousand, four hundred five".