131321221023 has 8 divisors (see below), whose sum is σ = 177311353600. Its totient is φ = 86439284568.

The previous prime is 131321221001. The next prime is 131321221027. The reversal of 131321221023 is 320122123131.

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

It is not a de Polignac number, because 131321221023 - 2⁶ = 131321220959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131321221027) 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, 277048753 + ... + 277049226.

It is an arithmetic number, because the mean of its divisors is an integer number (22163919200).

Almost surely, 2^131321221023 is an apocalyptic number.

131321221023 is a deficient number, since it is larger than the sum of its proper divisors (45990132577).

131321221023 is an equidigital number, since it uses as much as digits as its factorization.

131321221023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554098061.

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

Adding to 131321221023 its reverse (320122123131), we get a palindrome (451443344154).

The spelling of 131321221023 in words is "one hundred thirty-one billion, three hundred twenty-one million, two hundred twenty-one thousand, twenty-three".