206131551322 has 4 divisors (see below), whose sum is σ = 309197326986. Its totient is φ = 103065775660.

The previous prime is 206131551319. The next prime is 206131551337. The reversal of 206131551322 is 223155131602.

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

It can be written as a sum of positive squares in only one way, i.e., 194817187161 + 11314364161 = 441381^2 + 106369^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51532887829 + ... + 51532887832.

Almost surely, 2^206131551322 is an apocalyptic number.

206131551322 is a deficient number, since it is larger than the sum of its proper divisors (103065775664).

206131551322 is a wasteful number, since it uses less digits than its factorization.

206131551322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103065775663.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 206131551322 its reverse (223155131602), we get a palindrome (429286682924).

The spelling of 206131551322 in words is "two hundred six billion, one hundred thirty-one million, five hundred fifty-one thousand, three hundred twenty-two".