1101331231 has 48 divisors (see below), whose sum is σ = 1541736000. Its totient is φ = 764628480.

The previous prime is 1101331223. The next prime is 1101331249. The reversal of 1101331231 is 1321331011.

It is not a de Polignac number, because 1101331231 - 2³ = 1101331223 is a prime.

It is a super-2 number, since 2×1101331231² = 2425860960751950722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101331201) 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 47 ways as a sum of consecutive naturals, for example, 317595 + ... + 321043.

It is an arithmetic number, because the mean of its divisors is an integer number (32119500).

Almost surely, 2^1101331231 is an apocalyptic number.

1101331231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1101331231 is a deficient number, since it is larger than the sum of its proper divisors (440404769).

1101331231 is a wasteful number, since it uses less digits than its factorization.

1101331231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520 (or 3509 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1101331231 is about 33186.3108977181. The cubic root of 1101331231 is about 1032.6963728214.

Adding to 1101331231 its reverse (1321331011), we get a palindrome (2422662242).

The spelling of 1101331231 in words is "one billion, one hundred one million, three hundred thirty-one thousand, two hundred thirty-one".