1331901101 has 2 divisors, whose sum is σ = 1331901102. Its totient is φ = 1331901100.

The previous prime is 1331901097. The next prime is 1331901157. The reversal of 1331901101 is 1011091331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 904445476 + 427455625 = 30074^2 + 20675^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331901101 - 2² = 1331901097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331901161) 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, 665950550 + 665950551.

It is an arithmetic number, because the mean of its divisors is an integer number (665950551).

Almost surely, 2^1331901101 is an apocalyptic number.

It is an amenable number.

1331901101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331901101 is an equidigital number, since it uses as much as digits as its factorization.

1331901101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 20.

The square root of 1331901101 is about 36495.2202486846. The cubic root of 1331901101 is about 1100.2481811914.

Adding to 1331901101 its reverse (1011091331), we get a palindrome (2342992432).

The spelling of 1331901101 in words is "one billion, three hundred thirty-one million, nine hundred one thousand, one hundred one".