11320220231 has 2 divisors, whose sum is σ = 11320220232. Its totient is φ = 11320220230.

The previous prime is 11320220221. The next prime is 11320220243. The reversal of 11320220231 is 13202202311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11320220231 - 2⁶ = 11320220167 is a prime.

It is a super-2 number, since 2×11320220231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11320220221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660110115 + 5660110116.

It is an arithmetic number, because the mean of its divisors is an integer number (5660110116).

Almost surely, 2^11320220231 is an apocalyptic number.

11320220231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11320220231 is an equidigital number, since it uses as much as digits as its factorization.

11320220231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 11320220231 its reverse (13202202311), we get a palindrome (24522422542).

The spelling of 11320220231 in words is "eleven billion, three hundred twenty million, two hundred twenty thousand, two hundred thirty-one".