321131434411 has 4 divisors (see below), whose sum is σ = 321377891152. Its totient is φ = 320884977672.

The previous prime is 321131434387. The next prime is 321131434439. The reversal of 321131434411 is 114434131123.

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 321131434411 - 2¹³ = 321131426219 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 321131434411.

It is not an unprimeable number, because it can be changed into a prime (321131434111) 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, 123226416 + ... + 123229021.

It is an arithmetic number, because the mean of its divisors is an integer number (80344472788).

Almost surely, 2^321131434411 is an apocalyptic number.

321131434411 is a deficient number, since it is larger than the sum of its proper divisors (246456741).

321131434411 is a wasteful number, since it uses less digits than its factorization.

321131434411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246456740.

The product of its digits is 3456, while the sum is 28.

Adding to 321131434411 its reverse (114434131123), we get a palindrome (435565565534).

The spelling of 321131434411 in words is "three hundred twenty-one billion, one hundred thirty-one million, four hundred thirty-four thousand, four hundred eleven".