220230231331 has 4 divisors (see below), whose sum is σ = 240251161464. Its totient is φ = 200209301200.

The previous prime is 220230231271. The next prime is 220230231391. The reversal of 220230231331 is 133132032022.

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

It is an interprime number because it is at equal distance from previous prime (220230231271) and next prime (220230231391).

It is a cyclic number.

It is not a de Polignac number, because 220230231331 - 2⁷ = 220230231203 is a prime.

It is a super-2 number, since 2×220230231331² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220230231391) 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, 10010465050 + ... + 10010465071.

It is an arithmetic number, because the mean of its divisors is an integer number (60062790366).

Almost surely, 2^220230231331 is an apocalyptic number.

220230231331 is a deficient number, since it is larger than the sum of its proper divisors (20020930133).

220230231331 is a wasteful number, since it uses less digits than its factorization.

220230231331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20020930132.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 220230231331 its reverse (133132032022), we get a palindrome (353362263353).

The spelling of 220230231331 in words is "two hundred twenty billion, two hundred thirty million, two hundred thirty-one thousand, three hundred thirty-one".