1131343403 has 2 divisors, whose sum is σ = 1131343404. Its totient is φ = 1131343402.

The previous prime is 1131343363. The next prime is 1131343453. The reversal of 1131343403 is 3043431311.

It is a weak prime.

It is an emirp because it is prime and its reverse (3043431311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1131343403 - 2¹⁴ = 1131327019 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131343453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565671701 + 565671702.

It is an arithmetic number, because the mean of its divisors is an integer number (565671702).

Almost surely, 2^1131343403 is an apocalyptic number.

1131343403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131343403 is an equidigital number, since it uses as much as digits as its factorization.

1131343403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 1131343403 is about 33635.4486070871. The cubic root of 1131343403 is about 1041.9930355794.

Adding to 1131343403 its reverse (3043431311), we get a palindrome (4174774714).

The spelling of 1131343403 in words is "one billion, one hundred thirty-one million, three hundred forty-three thousand, four hundred three".