1191373223 has 2 divisors, whose sum is σ = 1191373224. Its totient is φ = 1191373222.

The previous prime is 1191373219. The next prime is 1191373229. The reversal of 1191373223 is 3223731911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1191373223 - 2² = 1191373219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1191373223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1191373229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 595686611 + 595686612.

It is an arithmetic number, because the mean of its divisors is an integer number (595686612).

Almost surely, 2^1191373223 is an apocalyptic number.

1191373223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1191373223 is an equidigital number, since it uses as much as digits as its factorization.

1191373223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 32.

The square root of 1191373223 is about 34516.2747555410. The cubic root of 1191373223 is about 1060.1059651394.

The spelling of 1191373223 in words is "one billion, one hundred ninety-one million, three hundred seventy-three thousand, two hundred twenty-three".