131022320331 has 8 divisors (see below), whose sum is σ = 199653059584. Its totient is φ = 74869897320.

The previous prime is 131022320327. The next prime is 131022320333. The reversal of 131022320331 is 133023220131.

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

It is not a de Polignac number, because 131022320331 - 2² = 131022320327 is a prime.

It is a super-2 number, since 2×131022320331² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 6239158111 = 131022320331 / (1 + 3 + 1 + 0 + 2 + 2 + 3 + 2 + 0 + 3 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131022320298 and 131022320307.

It is not an unprimeable number, because it can be changed into a prime (131022320333) 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 7 ways as a sum of consecutive naturals, for example, 3119579035 + ... + 3119579076.

It is an arithmetic number, because the mean of its divisors is an integer number (24956632448).

Almost surely, 2^131022320331 is an apocalyptic number.

131022320331 is a deficient number, since it is larger than the sum of its proper divisors (68630739253).

131022320331 is an equidigital number, since it uses as much as digits as its factorization.

131022320331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6239158121.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 131022320331 its reverse (133023220131), we get a palindrome (264045540462).

The spelling of 131022320331 in words is "one hundred thirty-one billion, twenty-two million, three hundred twenty thousand, three hundred thirty-one".