206152642331 has 4 divisors (see below), whose sum is σ = 207417382632. Its totient is φ = 204887902032.

The previous prime is 206152642309. The next prime is 206152642361. The reversal of 206152642331 is 133246251602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206152642331 is a prime.

It is a super-2 number, since 2×206152642331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206152642291 and 206152642300.

It is not an unprimeable number, because it can be changed into a prime (206152642361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632369906 + ... + 632370231.

It is an arithmetic number, because the mean of its divisors is an integer number (51854345658).

Almost surely, 2^206152642331 is an apocalyptic number.

206152642331 is a deficient number, since it is larger than the sum of its proper divisors (1264740301).

206152642331 is a wasteful number, since it uses less digits than its factorization.

206152642331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264740300.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 206152642331 its reverse (133246251602), we get a palindrome (339398893933).

The spelling of 206152642331 in words is "two hundred six billion, one hundred fifty-two million, six hundred forty-two thousand, three hundred thirty-one".