206231476631 has 8 divisors (see below), whose sum is σ = 206439174624. Its totient is φ = 206023836960.

The previous prime is 206231476601. The next prime is 206231476657. The reversal of 206231476631 is 136674132602.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206231476631 is a prime.

It is a super-2 number, since 2×206231476631² (a number of 23 digits) 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 (206231476601) 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, 11088566 + ... + 11107148.

It is an arithmetic number, because the mean of its divisors is an integer number (25804896828).

Almost surely, 2^206231476631 is an apocalyptic number.

206231476631 is a deficient number, since it is larger than the sum of its proper divisors (207697993).

206231476631 is a wasteful number, since it uses less digits than its factorization.

206231476631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29161.

The product of its (nonzero) digits is 217728, while the sum is 41.

The spelling of 206231476631 in words is "two hundred six billion, two hundred thirty-one million, four hundred seventy-six thousand, six hundred thirty-one".