321142053511 has 4 divisors (see below), whose sum is σ = 331501474624. Its totient is φ = 310782632400.

The previous prime is 321142053473. The next prime is 321142053541. The reversal of 321142053511 is 115350241123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 321142053511 - 2¹⁵ = 321142020743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 321142053511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321142053541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5179710510 + ... + 5179710571.

It is an arithmetic number, because the mean of its divisors is an integer number (82875368656).

Almost surely, 2^321142053511 is an apocalyptic number.

321142053511 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

321142053511 is a deficient number, since it is larger than the sum of its proper divisors (10359421113).

321142053511 is a wasteful number, since it uses less digits than its factorization.

321142053511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10359421112.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 321142053511 its reverse (115350241123), we get a palindrome (436492294634).

The spelling of 321142053511 in words is "three hundred twenty-one billion, one hundred forty-two million, fifty-three thousand, five hundred eleven".