206934381 has 12 divisors (see below), whose sum is σ = 311901408. Its totient is φ = 131958024.

The previous prime is 206934367. The next prime is 206934457. The reversal of 206934381 is 183439602.

206934381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 206934381 - 2⁵ = 206934349 is a prime.

It is a super-2 number, since 2×206934381² = 85643676079706322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206934311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 499635 + ... + 500048.

It is an arithmetic number, because the mean of its divisors is an integer number (25991784).

Almost surely, 2^206934381 is an apocalyptic number.

It is an amenable number.

206934381 is a deficient number, since it is larger than the sum of its proper divisors (104967027).

206934381 is a wasteful number, since it uses less digits than its factorization.

206934381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999712 (or 999709 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 206934381 is about 14385.2139712971. The cubic root of 206934381 is about 591.4856564407.

The spelling of 206934381 in words is "two hundred six million, nine hundred thirty-four thousand, three hundred eighty-one".