1101313231 has 2 divisors, whose sum is σ = 1101313232. Its totient is φ = 1101313230.

The previous prime is 1101313189. The next prime is 1101313243. The reversal of 1101313231 is 1323131011.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101313231 is a prime.

It is a super-2 number, since 2×1101313231² = 2425781665551318722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101313931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550656615 + 550656616.

It is an arithmetic number, because the mean of its divisors is an integer number (550656616).

Almost surely, 2^1101313231 is an apocalyptic number.

1101313231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101313231 is an equidigital number, since it uses as much as digits as its factorization.

1101313231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1101313231 is about 33186.0397004524. The cubic root of 1101313231 is about 1032.6907467102.

Adding to 1101313231 its reverse (1323131011), we get a palindrome (2424444242).

The spelling of 1101313231 in words is "one billion, one hundred one million, three hundred thirteen thousand, two hundred thirty-one".