196197431 has 4 divisors (see below), whose sum is σ = 197214192. Its totient is φ = 195180672.

The previous prime is 196197427. The next prime is 196197457. The reversal of 196197431 is 134791691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134791691 = 17 ⋅7928923.

It is a cyclic number.

It is not a de Polignac number, because 196197431 - 2² = 196197427 is a prime.

It is a super-2 number, since 2×196197431² = 76986863861999522, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196197031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508091 + ... + 508476.

It is an arithmetic number, because the mean of its divisors is an integer number (49303548).

Almost surely, 2^196197431 is an apocalyptic number.

196197431 is a deficient number, since it is larger than the sum of its proper divisors (1016761).

196197431 is a wasteful number, since it uses less digits than its factorization.

196197431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016760.

The product of its digits is 40824, while the sum is 41.

The square root of 196197431 is about 14007.0493323897. The cubic root of 196197431 is about 581.0735477649.

The spelling of 196197431 in words is "one hundred ninety-six million, one hundred ninety-seven thousand, four hundred thirty-one".