1198431 has 12 divisors (see below), whose sum is σ = 1864408. Its totient is φ = 737424.

The previous prime is 1198427. The next prime is 1198433. The reversal of 1198431 is 1348911.

It is not a de Polignac number, because 1198431 - 2² = 1198427 is a prime.

It is a super-2 number, since 2×1198431² = 2872473723522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1198395 and 1198404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5005 + ... + 5238.

2^1198431 is an apocalyptic number.

1198431 is a deficient number, since it is larger than the sum of its proper divisors (665977).

1198431 is a wasteful number, since it uses less digits than its factorization.

1198431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10262 (or 10259 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 1198431 is about 1094.7287335226. The cubic root of 1198431 is about 106.2195225157.

The spelling of 1198431 in words is "one million, one hundred ninety-eight thousand, four hundred thirty-one".