1131001019 has 2 divisors, whose sum is σ = 1131001020. Its totient is φ = 1131001018.

The previous prime is 1131001013. The next prime is 1131001097. The reversal of 1131001019 is 9101001311.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131001019 is a prime.

It is a super-2 number, since 2×1131001019² = 2558326609958076722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1131000988 and 1131001006.

It is not a weakly prime, because it can be changed into another prime (1131001013) 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, 565500509 + 565500510.

It is an arithmetic number, because the mean of its divisors is an integer number (565500510).

Almost surely, 2^1131001019 is an apocalyptic number.

1131001019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131001019 is an equidigital number, since it uses as much as digits as its factorization.

1131001019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27, while the sum is 17.

The square root of 1131001019 is about 33630.3585916059. The cubic root of 1131001019 is about 1041.8879104870.

The spelling of 1131001019 in words is "one billion, one hundred thirty-one million, one thousand, nineteen".