321020040131 has 4 divisors (see below), whose sum is σ = 366880045872. Its totient is φ = 275160034392.

The previous prime is 321020040113. The next prime is 321020040151. The reversal of 321020040131 is 131040020123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131040020123 = 29917 ⋅4380119.

It is a cyclic number.

It is not a de Polignac number, because 321020040131 - 2¹⁰ = 321020039107 is a prime.

It is a super-2 number, since 2×321020040131² (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 (321020040151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22930002860 + ... + 22930002873.

It is an arithmetic number, because the mean of its divisors is an integer number (91720011468).

Almost surely, 2^321020040131 is an apocalyptic number.

321020040131 is a deficient number, since it is larger than the sum of its proper divisors (45860005741).

321020040131 is an equidigital number, since it uses as much as digits as its factorization.

321020040131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45860005740.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 321020040131 its reverse (131040020123), we get a palindrome (452060060254).

The spelling of 321020040131 in words is "three hundred twenty-one billion, twenty million, forty thousand, one hundred thirty-one".