223231130131021 has 4 divisors (see below), whose sum is σ = 223231203870912. Its totient is φ = 223231056391132.

The previous prime is 223231130131013. The next prime is 223231130131159. The reversal of 223231130131021 is 120131031132322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 223231130131021 - 2³ = 223231130131013 is a prime.

It is a super-3 number, since 3×223231130131021³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223231130141021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32125525 + ... + 38451418.

It is an arithmetic number, because the mean of its divisors is an integer number (55807800967728).

Almost surely, 2^{223231130131021} is an apocalyptic number.

It is an amenable number.

223231130131021 is a deficient number, since it is larger than the sum of its proper divisors (73739891).

223231130131021 is an equidigital number, since it uses as much as digits as its factorization.

223231130131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73739890.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 223231130131021 its reverse (120131031132322), we get a palindrome (343362161263343).

The spelling of 223231130131021 in words is "two hundred twenty-three trillion, two hundred thirty-one billion, one hundred thirty million, one hundred thirty-one thousand, twenty-one".