1100131231 has 2 divisors, whose sum is σ = 1100131232. Its totient is φ = 1100131230.

The previous prime is 1100131189. The next prime is 1100131247. The reversal of 1100131231 is 1321310011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1100131231 - 2⁹ = 1100130719 is a prime.

It is a super-2 number, since 2×1100131231² = 2420577450843150722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100131031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550065615 + 550065616.

It is an arithmetic number, because the mean of its divisors is an integer number (550065616).

Almost surely, 2^1100131231 is an apocalyptic number.

1100131231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100131231 is an equidigital number, since it uses as much as digits as its factorization.

1100131231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1100131231 is about 33168.2262263148. The cubic root of 1100131231 is about 1032.3211644761.

Adding to 1100131231 its reverse (1321310011), we get a palindrome (2421441242).

The spelling of 1100131231 in words is "one billion, one hundred million, one hundred thirty-one thousand, two hundred thirty-one".