131122323021 has 8 divisors (see below), whose sum is σ = 174837176800. Its totient is φ = 87411175632.

The previous prime is 131122323001. The next prime is 131122323049. The reversal of 131122323021 is 120323221131.

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

It is not a de Polignac number, because 131122323021 - 2⁷ = 131122322893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131122323001) 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, 842971 + ... + 986328.

It is an arithmetic number, because the mean of its divisors is an integer number (21854647100).

Almost surely, 2^131122323021 is an apocalyptic number.

It is an amenable number.

131122323021 is a deficient number, since it is larger than the sum of its proper divisors (43714853779).

131122323021 is a wasteful number, since it uses less digits than its factorization.

131122323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853195.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 131122323021 its reverse (120323221131), we get a palindrome (251445544152).

The spelling of 131122323021 in words is "one hundred thirty-one billion, one hundred twenty-two million, three hundred twenty-three thousand, twenty-one".