1197431 has 4 divisors (see below), whose sum is σ = 1229832. Its totient is φ = 1165032.

The previous prime is 1197409. The next prime is 1197433. The reversal of 1197431 is 1347911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1347911 = 31 ⋅43481.

It is a cyclic number.

It is not a de Polignac number, because 1197431 - 2⁶ = 1197367 is a prime.

It is a super-2 number, since 2×1197431² = 2867681999522, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1197431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197433) 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 3 ways as a sum of consecutive naturals, for example, 16145 + ... + 16218.

It is an arithmetic number, because the mean of its divisors is an integer number (307458).

2^1197431 is an apocalyptic number.

1197431 is a deficient number, since it is larger than the sum of its proper divisors (32401).

1197431 is an equidigital number, since it uses as much as digits as its factorization.

1197431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32400.

The product of its digits is 756, while the sum is 26.

The square root of 1197431 is about 1094.2719040531. The cubic root of 1197431 is about 106.1899702427.

The spelling of 1197431 in words is "one million, one hundred ninety-seven thousand, four hundred thirty-one".