1100131247 has 2 divisors, whose sum is σ = 1100131248. Its totient is φ = 1100131246.

The previous prime is 1100131231. The next prime is 1100131267. The reversal of 1100131247 is 7421310011.

It is a happy number.

It is an a-pointer prime, because the next prime (1100131267) can be obtained adding 1100131247 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1100131247 - 2⁴ = 1100131231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100131267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550065623 + 550065624.

It is an arithmetic number, because the mean of its divisors is an integer number (550065624).

Almost surely, 2^1100131247 is an apocalyptic number.

1100131247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100131247 is an equidigital number, since it uses as much as digits as its factorization.

1100131247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 1100131247 is about 33168.2264675095. The cubic root of 1100131247 is about 1032.3211694807.

Adding to 1100131247 its reverse (7421310011), we get a palindrome (8521441258).

The spelling of 1100131247 in words is "one billion, one hundred million, one hundred thirty-one thousand, two hundred forty-seven".