1331350061 has 2 divisors, whose sum is σ = 1331350062. Its totient is φ = 1331350060.

The previous prime is 1331350049. The next prime is 1331350079. The reversal of 1331350061 is 1600531331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1310874436 + 20475625 = 36206^2 + 4525^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331350061 - 2⁶ = 1331349997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331350001) 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, 665675030 + 665675031.

It is an arithmetic number, because the mean of its divisors is an integer number (665675031).

Almost surely, 2^1331350061 is an apocalyptic number.

It is an amenable number.

1331350061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331350061 is an equidigital number, since it uses as much as digits as its factorization.

1331350061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 1331350061 is about 36487.6699859007. The cubic root of 1331350061 is about 1100.0964270840.

Adding to 1331350061 its reverse (1600531331), we get a palindrome (2931881392).

The spelling of 1331350061 in words is "one billion, three hundred thirty-one million, three hundred fifty thousand, sixty-one".