321613007 has 2 divisors, whose sum is σ = 321613008. Its totient is φ = 321613006.

The previous prime is 321613001. The next prime is 321613009. The reversal of 321613007 is 700316123.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321613007 - 2¹⁸ = 321350863 is a prime.

Together with 321613009, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321613001) 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 as a sum of consecutive naturals, namely, 160806503 + 160806504.

It is an arithmetic number, because the mean of its divisors is an integer number (160806504).

Almost surely, 2^321613007 is an apocalyptic number.

321613007 is a deficient number, since it is larger than the sum of its proper divisors (1).

321613007 is an equidigital number, since it uses as much as digits as its factorization.

321613007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 321613007 is about 17933.5720647059. The cubic root of 321613007 is about 685.1377043916.

The spelling of 321613007 in words is "three hundred twenty-one million, six hundred thirteen thousand, seven".