320554133 has 2 divisors, whose sum is σ = 320554134. Its totient is φ = 320554132.

The previous prime is 320554109. The next prime is 320554153. The reversal of 320554133 is 331455023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 317481124 + 3073009 = 17818^2 + 1753^2 .

It is an emirp because it is prime and its reverse (331455023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320554133 - 2¹² = 320550037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320554153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160277066 + 160277067.

It is an arithmetic number, because the mean of its divisors is an integer number (160277067).

Almost surely, 2^320554133 is an apocalyptic number.

It is an amenable number.

320554133 is a deficient number, since it is larger than the sum of its proper divisors (1).

320554133 is an equidigital number, since it uses as much as digits as its factorization.

320554133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 320554133 is about 17904.0256087842. The cubic root of 320554133 is about 684.3849652031.

The spelling of 320554133 in words is "three hundred twenty million, five hundred fifty-four thousand, one hundred thirty-three".