196861731 has 8 divisors (see below), whose sum is σ = 286344384. Its totient is φ = 119310120.

The previous prime is 196861729. The next prime is 196861733. The reversal of 196861731 is 137168691.

It is an interprime number because it is at equal distance from previous prime (196861729) and next prime (196861733).

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

It is not a de Polignac number, because 196861731 - 2¹ = 196861729 is a prime.

It is a super-2 number, since 2×196861731² = 77509082264632722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) 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 (196861733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2982721 + ... + 2982786.

It is an arithmetic number, because the mean of its divisors is an integer number (35793048).

Almost surely, 2^196861731 is an apocalyptic number.

196861731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

196861731 is a deficient number, since it is larger than the sum of its proper divisors (89482653).

196861731 is a wasteful number, since it uses less digits than its factorization.

196861731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5965521.

The product of its digits is 54432, while the sum is 42.

The square root of 196861731 is about 14030.7423538457. The cubic root of 196861731 is about 581.7286231417.

The spelling of 196861731 in words is "one hundred ninety-six million, eight hundred sixty-one thousand, seven hundred thirty-one".