1331630341 has 2 divisors, whose sum is σ = 1331630342. Its totient is φ = 1331630340.

The previous prime is 1331630297. The next prime is 1331630369. The reversal of 1331630341 is 1430361331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 921365316 + 410265025 = 30354^2 + 20255^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331630341 - 2⁹ = 1331629829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331630441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665815170 + 665815171.

It is an arithmetic number, because the mean of its divisors is an integer number (665815171).

Almost surely, 2^1331630341 is an apocalyptic number.

It is an amenable number.

1331630341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331630341 is an equidigital number, since it uses as much as digits as its factorization.

1331630341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 1331630341 is about 36491.5105332734. The cubic root of 1331630341 is about 1100.1736202533.

Adding to 1331630341 its reverse (1430361331), we get a palindrome (2761991672).

The spelling of 1331630341 in words is "one billion, three hundred thirty-one million, six hundred thirty thousand, three hundred forty-one".