1198131 has 8 divisors (see below), whose sum is σ = 1742784. Its totient is φ = 726120.

The previous prime is 1198123. The next prime is 1198133. The reversal of 1198131 is 1318911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1198131 - 2³ = 1198123 is a prime.

It is a super-2 number, since 2×1198131² = 2871035786322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1198133) 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, 18121 + ... + 18186.

It is an arithmetic number, because the mean of its divisors is an integer number (217848).

2^1198131 is an apocalyptic number.

1198131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1198131 is a deficient number, since it is larger than the sum of its proper divisors (544653).

1198131 is a wasteful number, since it uses less digits than its factorization.

1198131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36321.

The product of its digits is 216, while the sum is 24.

The square root of 1198131 is about 1094.5917047009. The cubic root of 1198131 is about 106.2106585605.

The spelling of 1198131 in words is "one million, one hundred ninety-eight thousand, one hundred thirty-one".