326861231 has 4 divisors (see below), whose sum is σ = 326981712. Its totient is φ = 326740752.

The previous prime is 326861207. The next prime is 326861263. The reversal of 326861231 is 132168623.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-326861231 is a prime.

It is a super-2 number, since 2×326861231² = 213676528661670722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326861531) 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, 56075 + ... + 61628.

It is an arithmetic number, because the mean of its divisors is an integer number (81745428).

Almost surely, 2^326861231 is an apocalyptic number.

326861231 is a deficient number, since it is larger than the sum of its proper divisors (120481).

326861231 is a wasteful number, since it uses less digits than its factorization.

326861231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120480.

The product of its digits is 10368, while the sum is 32.

The square root of 326861231 is about 18079.3039412473. The cubic root of 326861231 is about 688.8444082343.

The spelling of 326861231 in words is "three hundred twenty-six million, eight hundred sixty-one thousand, two hundred thirty-one".