321005341145 has 16 divisors (see below), whose sum is σ = 405870816000. Its totient is φ = 243054027648.

The previous prime is 321005341133. The next prime is 321005341157. The reversal of 321005341145 is 541143500123.

It is an interprime number because it is at equal distance from previous prime (321005341133) and next prime (321005341157).

It is a cyclic number.

It is not a de Polignac number, because 321005341145 - 2¹⁶ = 321005275609 is a prime.

It is a super-2 number, since 2×321005341145² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1527380 + ... + 1724789.

It is an arithmetic number, because the mean of its divisors is an integer number (25366926000).

Almost surely, 2^321005341145 is an apocalyptic number.

It is an amenable number.

321005341145 is a deficient number, since it is larger than the sum of its proper divisors (84865474855).

321005341145 is a wasteful number, since it uses less digits than its factorization.

321005341145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3253232.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 321005341145 its reverse (541143500123), we get a palindrome (862148841268).

The spelling of 321005341145 in words is "three hundred twenty-one billion, five million, three hundred forty-one thousand, one hundred forty-five".