326385746831 has 4 divisors (see below), whose sum is σ = 326532703464. Its totient is φ = 326238790200.

The previous prime is 326385746801. The next prime is 326385746861. The reversal of 326385746831 is 138647583623.

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

It is an interprime number because it is at equal distance from previous prime (326385746801) and next prime (326385746861).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-326385746831 is a prime.

It is a super-2 number, since 2×326385746831² (a number of 24 digits) 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 (326385746801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73474985 + ... + 73479426.

It is an arithmetic number, because the mean of its divisors is an integer number (81633175866).

Almost surely, 2^326385746831 is an apocalyptic number.

326385746831 is a deficient number, since it is larger than the sum of its proper divisors (146956633).

326385746831 is a wasteful number, since it uses less digits than its factorization.

326385746831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146956632.

The product of its digits is 17418240, while the sum is 56.

The spelling of 326385746831 in words is "three hundred twenty-six billion, three hundred eighty-five million, seven hundred forty-six thousand, eight hundred thirty-one".