11197143 has 8 divisors (see below), whose sum is σ = 16588400. Its totient is φ = 7464744.

The previous prime is 11197129. The next prime is 11197181. The reversal of 11197143 is 34179111.

It is not a de Polignac number, because 11197143 - 2⁴ = 11197127 is a prime.

It is a super-2 number, since 2×11197143² = 250752022724898, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 414709 = 11197143 / (1 + 1 + 1 + 9 + 7 + 1 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11197943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207328 + ... + 207381.

It is an arithmetic number, because the mean of its divisors is an integer number (2073550).

Almost surely, 2^11197143 is an apocalyptic number.

11197143 is a deficient number, since it is larger than the sum of its proper divisors (5391257).

11197143 is an equidigital number, since it uses as much as digits as its factorization.

11197143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414718 (or 414712 counting only the distinct ones).

The product of its digits is 756, while the sum is 27.

The square root of 11197143 is about 3346.2132328948. The cubic root of 11197143 is about 223.7187624275.

The spelling of 11197143 in words is "eleven million, one hundred ninety-seven thousand, one hundred forty-three".