223221023131 has 4 divisors (see below), whose sum is σ = 223224093064. Its totient is φ = 223217953200.

The previous prime is 223221023083. The next prime is 223221023161. The reversal of 223221023131 is 131320122322.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 223221023131 - 2²³ = 223212634523 is a prime.

It is a super-3 number, since 3×223221023131³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223221023161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1423185 + ... + 1572226.

It is an arithmetic number, because the mean of its divisors is an integer number (55806023266).

Almost surely, 2^223221023131 is an apocalyptic number.

223221023131 is a deficient number, since it is larger than the sum of its proper divisors (3069933).

223221023131 is an equidigital number, since it uses as much as digits as its factorization.

223221023131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3069932.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 223221023131 its reverse (131320122322), we get a palindrome (354541145453).

The spelling of 223221023131 in words is "two hundred twenty-three billion, two hundred twenty-one million, twenty-three thousand, one hundred thirty-one".