131020323121 has 8 divisors (see below), whose sum is σ = 131604542720. Its totient is φ = 130436209008.

The previous prime is 131020323061. The next prime is 131020323143. The reversal of 131020323121 is 121323020131.

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 131020323121 - 2²³ = 131011934513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131020323521) 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, 3514240 + ... + 3551326.

It is an arithmetic number, because the mean of its divisors is an integer number (16450567840).

Almost surely, 2^131020323121 is an apocalyptic number.

It is an amenable number.

131020323121 is a deficient number, since it is larger than the sum of its proper divisors (584219599).

131020323121 is a wasteful number, since it uses less digits than its factorization.

131020323121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52743.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 131020323121 its reverse (121323020131), we get a palindrome (252343343252).

The spelling of 131020323121 in words is "one hundred thirty-one billion, twenty million, three hundred twenty-three thousand, one hundred twenty-one".