321512054249 has 2 divisors, whose sum is σ = 321512054250. Its totient is φ = 321512054248.

The previous prime is 321512054221. The next prime is 321512054251. The reversal of 321512054249 is 942450215123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 256751983849 + 64760070400 = 506707^2 + 254480^2 .

It is an emirp because it is prime and its reverse (942450215123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321512054249 - 2¹⁶ = 321511988713 is a prime.

It is a super-3 number, since 3×321512054249³ (a number of 35 digits) contains 333 as substring.

Together with 321512054251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (321512054219) 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, 160756027124 + 160756027125.

It is an arithmetic number, because the mean of its divisors is an integer number (160756027125).

Almost surely, 2^321512054249 is an apocalyptic number.

It is an amenable number.

321512054249 is a deficient number, since it is larger than the sum of its proper divisors (1).

321512054249 is an equidigital number, since it uses as much as digits as its factorization.

321512054249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 321512054249 in words is "three hundred twenty-one billion, five hundred twelve million, fifty-four thousand, two hundred forty-nine".