208000379931 has 16 divisors (see below), whose sum is σ = 278541020160. Its totient is φ = 138064640480.

The previous prime is 208000379927. The next prime is 208000379933. The reversal of 208000379931 is 139973000802.

It is a cyclic number.

It is not a de Polignac number, because 208000379931 - 2² = 208000379927 is a prime.

It is a super-2 number, since 2×208000379931² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (208000379933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473221 + ... + 799961.

It is an arithmetic number, because the mean of its divisors is an integer number (17408813760).

Almost surely, 2^208000379931 is an apocalyptic number.

208000379931 is a deficient number, since it is larger than the sum of its proper divisors (70540640229).

208000379931 is a wasteful number, since it uses less digits than its factorization.

208000379931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327666.

The product of its (nonzero) digits is 81648, while the sum is 42.

The spelling of 208000379931 in words is "two hundred eight billion, three hundred seventy-nine thousand, nine hundred thirty-one".