326631 has 4 divisors (see below), whose sum is σ = 435512. Its totient is φ = 217752.

The previous prime is 326617. The next prime is 326633. The reversal of 326631 is 136623.

326631 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136623 = 3 ⋅45541.

It is not a de Polignac number, because 326631 - 2⁶ = 326567 is a prime.

It is a super-2 number, since 2×326631² = 213375620322, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3 + 2⁵ + 6⁶ + 6⁷ + 3 + 1 .

It is a D-number.

It is a Duffinian number.

326631 is strictly pandigital in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 326598 and 326607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326633) 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, 54436 + ... + 54441.

It is an arithmetic number, because the mean of its divisors is an integer number (108878).

2³²⁶⁶³¹ is an apocalyptic number.

326631 is a deficient number, since it is larger than the sum of its proper divisors (108881).

326631 is a wasteful number, since it uses less digits than its factorization.

326631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108880.

The product of its digits is 648, while the sum is 21.

The square root of 326631 is about 571.5164039641. The cubic root of 326631 is about 68.8682636640.

The spelling of 326631 in words is "three hundred twenty-six thousand, six hundred thirty-one".