321144011511 has 8 divisors (see below), whose sum is σ = 430756040064. Its totient is φ = 212813995320.

The previous prime is 321144011453. The next prime is 321144011633. The reversal of 321144011511 is 115110441123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 321144011511 - 2²⁵ = 321110457079 is a prime.

It is a super-2 number, since 2×321144011511² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321144010511) 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 in 7 ways as a sum of consecutive naturals, for example, 320502505 + ... + 320503506.

It is an arithmetic number, because the mean of its divisors is an integer number (53844505008).

Almost surely, 2^321144011511 is an apocalyptic number.

321144011511 is a deficient number, since it is larger than the sum of its proper divisors (109612028553).

321144011511 is a wasteful number, since it uses less digits than its factorization.

321144011511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641006181.

The product of its (nonzero) digits is 480, while the sum is 24.

Adding to 321144011511 its reverse (115110441123), we get a palindrome (436254452634).

The spelling of 321144011511 in words is "three hundred twenty-one billion, one hundred forty-four million, eleven thousand, five hundred eleven".