208196224731 has 24 divisors (see below), whose sum is σ = 328607345664. Its totient is φ = 125971619760.

The previous prime is 208196224721. The next prime is 208196224739. The reversal of 208196224731 is 137422691802.

208196224731 is a `hidden beast` number, since 2 + 0 + 8 + 19 + 622 + 4 + 7 + 3 + 1 = 666.

It is not a de Polignac number, because 208196224731 - 2¹⁰ = 208196223707 is a prime.

It is a super-2 number, since 2×208196224731² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (208196224739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1672191 + ... + 1792376.

It is an arithmetic number, because the mean of its divisors is an integer number (13691972736).

Almost surely, 2^208196224731 is an apocalyptic number.

208196224731 is a deficient number, since it is larger than the sum of its proper divisors (120411120933).

208196224731 is a wasteful number, since it uses less digits than its factorization.

208196224731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3465191 (or 3465188 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 208196224731 in words is "two hundred eight billion, one hundred ninety-six million, two hundred twenty-four thousand, seven hundred thirty-one".