1206045131 has 2 divisors, whose sum is σ = 1206045132. Its totient is φ = 1206045130.

The previous prime is 1206045119. The next prime is 1206045133. The reversal of 1206045131 is 1315406021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1206045131 is a prime.

It is a super-2 number, since 2×1206045131² = 2909089716017614322, which contains 22 as substring.

Together with 1206045133, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1206045097 and 1206045106.

It is not a weakly prime, because it can be changed into another prime (1206045133) 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, 603022565 + 603022566.

It is an arithmetic number, because the mean of its divisors is an integer number (603022566).

Almost surely, 2^1206045131 is an apocalyptic number.

1206045131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1206045131 is an equidigital number, since it uses as much as digits as its factorization.

1206045131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1206045131 is about 34728.1604897236. The cubic root of 1206045131 is about 1064.4400006542.

The spelling of 1206045131 in words is "one billion, two hundred six million, forty-five thousand, one hundred thirty-one".