321311031131 has 8 divisors (see below), whose sum is σ = 324330495984. Its totient is φ = 318291873120.

The previous prime is 321311031121. The next prime is 321311031143. The reversal of 321311031131 is 131130113123.

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 321311031131 - 2¹⁰ = 321311030107 is a prime.

It is a super-2 number, since 2×321311031131² (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 (321311031121) 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, 2401541 + ... + 2531801.

It is an arithmetic number, because the mean of its divisors is an integer number (40541311998).

Almost surely, 2^321311031131 is an apocalyptic number.

321311031131 is a deficient number, since it is larger than the sum of its proper divisors (3019464853).

321311031131 is a wasteful number, since it uses less digits than its factorization.

321311031131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153421.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 321311031131 its reverse (131130113123), we get a palindrome (452441144254).

The spelling of 321311031131 in words is "three hundred twenty-one billion, three hundred eleven million, thirty-one thousand, one hundred thirty-one".