321131059 has 2 divisors, whose sum is σ = 321131060. Its totient is φ = 321131058.

The previous prime is 321131053. The next prime is 321131087. The reversal of 321131059 is 950131123.

It is a weak prime.

It is an emirp because it is prime and its reverse (950131123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321131059 - 2¹⁹ = 320606771 is a prime.

It is a super-2 number, since 2×321131059² = 206250314108922962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (321131053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160565529 + 160565530.

It is an arithmetic number, because the mean of its divisors is an integer number (160565530).

Almost surely, 2^321131059 is an apocalyptic number.

321131059 is a deficient number, since it is larger than the sum of its proper divisors (1).

321131059 is an equidigital number, since it uses as much as digits as its factorization.

321131059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 321131059 is about 17920.1299939481. The cubic root of 321131059 is about 684.7952992695.

The spelling of 321131059 in words is "three hundred twenty-one million, one hundred thirty-one thousand, fifty-nine".