196543831 has 8 divisors (see below), whose sum is σ = 214531200. Its totient is φ = 178576440.

The previous prime is 196543829. The next prime is 196543843. The reversal of 196543831 is 138345691.

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

It is a cyclic number.

It is not a de Polignac number, because 196543831 - 2¹ = 196543829 is a prime.

It is a super-2 number, since 2×196543831² = 77258955008313122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196543811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21910 + ... + 29548.

It is an arithmetic number, because the mean of its divisors is an integer number (26816400).

Almost surely, 2^196543831 is an apocalyptic number.

196543831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

196543831 is a deficient number, since it is larger than the sum of its proper divisors (17987369).

196543831 is a wasteful number, since it uses less digits than its factorization.

196543831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9989.

The product of its digits is 77760, while the sum is 40.

The square root of 196543831 is about 14019.4090816981. The cubic root of 196543831 is about 581.4153217488.

It can be divided in two parts, 1965 and 43831, that added together give a square (45796 = 214²).

The spelling of 196543831 in words is "one hundred ninety-six million, five hundred forty-three thousand, eight hundred thirty-one".