1201330331 has 2 divisors, whose sum is σ = 1201330332. Its totient is φ = 1201330330.

The previous prime is 1201330289. The next prime is 1201330349. The reversal of 1201330331 is 1330331021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201330331 - 2²² = 1197136027 is a prime.

It is a super-3 number, since 3×1201330331³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1201330531) 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, 600665165 + 600665166.

It is an arithmetic number, because the mean of its divisors is an integer number (600665166).

Almost surely, 2^1201330331 is an apocalyptic number.

1201330331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201330331 is an equidigital number, since it uses as much as digits as its factorization.

1201330331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1201330331 is about 34660.2125065615. The cubic root of 1201330331 is about 1063.0511151686.

Adding to 1201330331 its reverse (1330331021), we get a palindrome (2531661352).

The spelling of 1201330331 in words is "one billion, two hundred one million, three hundred thirty thousand, three hundred thirty-one".