1101231231 has 8 divisors (see below), whose sum is σ = 1492379184. Its totient is φ = 722118720.

The previous prime is 1101231227. The next prime is 1101231277. The reversal of 1101231231 is 1321321011.

It is a happy number.

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

It is not a de Polignac number, because 1101231231 - 2² = 1101231227 is a prime.

It is a super-2 number, since 2×1101231231² = 2425420448259550722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1101231231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101231221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3008646 + ... + 3009011.

It is an arithmetic number, because the mean of its divisors is an integer number (186547398).

Almost surely, 2^1101231231 is an apocalyptic number.

1101231231 is a deficient number, since it is larger than the sum of its proper divisors (391147953).

1101231231 is an equidigital number, since it uses as much as digits as its factorization.

1101231231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6017721.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1101231231 is about 33184.8042181960. The cubic root of 1101231231 is about 1032.6651158722.

Adding to 1101231231 its reverse (1321321011), we get a palindrome (2422552242).

The spelling of 1101231231 in words is "one billion, one hundred one million, two hundred thirty-one thousand, two hundred thirty-one".