326389447957031 has 2 divisors, whose sum is σ = 326389447957032. Its totient is φ = 326389447957030.

The previous prime is 326389447957021. The next prime is 326389447957091. The reversal of 326389447957031 is 130759744983623.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-326389447957031 is a prime.

It is a super-2 number, since 2×326389447957031² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326389447957021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163194723978515 + 163194723978516.

It is an arithmetic number, because the mean of its divisors is an integer number (163194723978516).

It is a 1-persistent number, because it is pandigital, but 2⋅326389447957031 = 652778895914062 is not.

Almost surely, 2^{326389447957031} is an apocalyptic number.

326389447957031 is a deficient number, since it is larger than the sum of its proper divisors (1).

326389447957031 is an equidigital number, since it uses as much as digits as its factorization.

326389447957031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 823011840, while the sum is 71.

The spelling of 326389447957031 in words is "three hundred twenty-six trillion, three hundred eighty-nine billion, four hundred forty-seven million, nine hundred fifty-seven thousand, thirty-one".