208434131 has 8 divisors (see below), whose sum is σ = 210306384. Its totient is φ = 206569440.

The previous prime is 208434101. The next prime is 208434137. The reversal of 208434131 is 131434802.

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 208434131 - 2¹⁴ = 208417747 is a prime.

It is a super-2 number, since 2×208434131² = 86889573931450322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 208434131.

It is not an unprimeable number, because it can be changed into a prime (208434137) 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, 63101 + ... + 66321.

It is an arithmetic number, because the mean of its divisors is an integer number (26288298).

Almost surely, 2^208434131 is an apocalyptic number.

208434131 is a deficient number, since it is larger than the sum of its proper divisors (1872253).

208434131 is a wasteful number, since it uses less digits than its factorization.

208434131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3781.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 208434131 is about 14437.2480410915. The cubic root of 208434131 is about 592.9111424122.

Adding to 208434131 its reverse (131434802), we get a palindrome (339868933).

The spelling of 208434131 in words is "two hundred eight million, four hundred thirty-four thousand, one hundred thirty-one".