326172403 has 2 divisors, whose sum is σ = 326172404. Its totient is φ = 326172402.

The previous prime is 326172377. The next prime is 326172437. The reversal of 326172403 is 304271623.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 326172403 - 2⁹ = 326171891 is a prime.

It is not a weakly prime, because it can be changed into another prime (326172463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163086201 + 163086202.

It is an arithmetic number, because the mean of its divisors is an integer number (163086202).

Almost surely, 2^326172403 is an apocalyptic number.

326172403 is a deficient number, since it is larger than the sum of its proper divisors (1).

326172403 is an equidigital number, since it uses as much as digits as its factorization.

326172403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 326172403 is about 18060.2437137487. The cubic root of 326172403 is about 688.3601772322.

The spelling of 326172403 in words is "three hundred twenty-six million, one hundred seventy-two thousand, four hundred three".