321513143389 has 2 divisors, whose sum is σ = 321513143390. Its totient is φ = 321513143388.

The previous prime is 321513143377. The next prime is 321513143437. The reversal of 321513143389 is 983341315123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319349312100 + 2163831289 = 565110^2 + 46517^2 .

It is an emirp because it is prime and its reverse (983341315123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321513143389 - 2⁷ = 321513143261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321513143489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160756571694 + 160756571695.

It is an arithmetic number, because the mean of its divisors is an integer number (160756571695).

Almost surely, 2^321513143389 is an apocalyptic number.

It is an amenable number.

321513143389 is a deficient number, since it is larger than the sum of its proper divisors (1).

321513143389 is an equidigital number, since it uses as much as digits as its factorization.

321513143389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 43.

The spelling of 321513143389 in words is "three hundred twenty-one billion, five hundred thirteen million, one hundred forty-three thousand, three hundred eighty-nine".