321311222131 has 8 divisors (see below), whose sum is σ = 322823380880. Its totient is φ = 319802370048.

The previous prime is 321311222101. The next prime is 321311222137. The reversal of 321311222131 is 131222113123.

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

It is a cyclic number.

It is not a de Polignac number, because 321311222131 - 2⁹ = 321311221619 is a prime.

It is a super-2 number, since 2×321311222131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321311222137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631761 + ... + 1020658.

It is an arithmetic number, because the mean of its divisors is an integer number (40352922610).

Almost surely, 2^321311222131 is an apocalyptic number.

321311222131 is a deficient number, since it is larger than the sum of its proper divisors (1512158749).

321311222131 is a wasteful number, since it uses less digits than its factorization.

321311222131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653333.

The product of its digits is 432, while the sum is 22.

Adding to 321311222131 its reverse (131222113123), we get a palindrome (452533335254).

The spelling of 321311222131 in words is "three hundred twenty-one billion, three hundred eleven million, two hundred twenty-two thousand, one hundred thirty-one".