1206201131 has 2 divisors, whose sum is σ = 1206201132. Its totient is φ = 1206201130.

The previous prime is 1206201097. The next prime is 1206201163. The reversal of 1206201131 is 1311026021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1206201131 is a prime.

It is a super-2 number, since 2×1206201131² = 2909842336851358322, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1206200131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603100565 + 603100566.

It is an arithmetic number, because the mean of its divisors is an integer number (603100566).

Almost surely, 2^1206201131 is an apocalyptic number.

1206201131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1206201131 is an equidigital number, since it uses as much as digits as its factorization.

1206201131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1206201131 is about 34730.4064329803. The cubic root of 1206201131 is about 1064.4858932102.

Adding to 1206201131 its reverse (1311026021), we get a palindrome (2517227152).

The spelling of 1206201131 in words is "one billion, two hundred six million, two hundred one thousand, one hundred thirty-one".