1131031103 has 2 divisors, whose sum is σ = 1131031104. Its totient is φ = 1131031102.

The previous prime is 1131031091. The next prime is 1131031189. The reversal of 1131031103 is 3011301311.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1131031103 - 2⁸ = 1131030847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131039103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565515551 + 565515552.

It is an arithmetic number, because the mean of its divisors is an integer number (565515552).

Almost surely, 2^1131031103 is an apocalyptic number.

1131031103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131031103 is an equidigital number, since it uses as much as digits as its factorization.

1131031103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 1131031103 is about 33630.8058630774. The cubic root of 1131031103 is about 1041.8971482854.

Adding to 1131031103 its reverse (3011301311), we get a palindrome (4142332414).

The spelling of 1131031103 in words is "one billion, one hundred thirty-one million, thirty-one thousand, one hundred three".