1198031 has 4 divisors (see below), whose sum is σ = 1201200. Its totient is φ = 1194864.

The previous prime is 1198013. The next prime is 1198033. The reversal of 1198031 is 1308911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1198031 - 2¹⁴ = 1181647 is a prime.

It is a super-2 number, since 2×1198031² = 2870556553922, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1197988 and 1198006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 926 + ... + 1803.

It is an arithmetic number, because the mean of its divisors is an integer number (300300).

2^1198031 is an apocalyptic number.

1198031 is a deficient number, since it is larger than the sum of its proper divisors (3169).

1198031 is an equidigital number, since it uses as much as digits as its factorization.

1198031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3168.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 1198031 is about 1094.5460246148. The cubic root of 1198031 is about 106.2077035799.

The spelling of 1198031 in words is "one million, one hundred ninety-eight thousand, thirty-one".