1131213019 has 2 divisors, whose sum is σ = 1131213020. Its totient is φ = 1131213018.

The previous prime is 1131213011. The next prime is 1131213023. The reversal of 1131213019 is 9103121311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131213019 - 2³ = 1131213011 is a prime.

It is a super-2 number, since 2×1131213019² = 2559285788710188722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1131213011) 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, 565606509 + 565606510.

It is an arithmetic number, because the mean of its divisors is an integer number (565606510).

Almost surely, 2^1131213019 is an apocalyptic number.

1131213019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131213019 is an equidigital number, since it uses as much as digits as its factorization.

1131213019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 1131213019 is about 33633.5103579748. The cubic root of 1131213019 is about 1041.9530051639.

The spelling of 1131213019 in words is "one billion, one hundred thirty-one million, two hundred thirteen thousand, nineteen".