1131403309 has 2 divisors, whose sum is σ = 1131403310. Its totient is φ = 1131403308.

The previous prime is 1131403283. The next prime is 1131403337. The reversal of 1131403309 is 9033041311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1130976900 + 426409 = 33630^2 + 653^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131403309 - 2⁵ = 1131403277 is a prime.

It is a super-2 number, since 2×1131403309² = 2560146895232298962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131493309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565701654 + 565701655.

It is an arithmetic number, because the mean of its divisors is an integer number (565701655).

Almost surely, 2^1131403309 is an apocalyptic number.

It is an amenable number.

1131403309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131403309 is an equidigital number, since it uses as much as digits as its factorization.

1131403309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 1131403309 is about 33636.3391141188. The cubic root of 1131403309 is about 1042.0114268515.

The spelling of 1131403309 in words is "one billion, one hundred thirty-one million, four hundred three thousand, three hundred nine".