1100131031 has 2 divisors, whose sum is σ = 1100131032. Its totient is φ = 1100131030.

The previous prime is 1100131003. The next prime is 1100131061. The reversal of 1100131031 is 1301310011.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1100131031 is a prime.

It is a super-2 number, since 2×1100131031² = 2420576570738245922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100131061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550065515 + 550065516.

It is an arithmetic number, because the mean of its divisors is an integer number (550065516).

Almost surely, 2^1100131031 is an apocalyptic number.

1100131031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100131031 is an equidigital number, since it uses as much as digits as its factorization.

1100131031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 1100131031 is about 33168.2232113811. The cubic root of 1100131031 is about 1032.3211019186.

Adding to 1100131031 its reverse (1301310011), we get a palindrome (2401441042).

The spelling of 1100131031 in words is "one billion, one hundred million, one hundred thirty-one thousand, thirty-one".