1301121331 has 2 divisors, whose sum is σ = 1301121332. Its totient is φ = 1301121330.

The previous prime is 1301121271. The next prime is 1301121343. The reversal of 1301121331 is 1331211031.

It is a strong prime.

It is an emirp because it is prime and its reverse (1331211031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1301121331 - 2⁷ = 1301121203 is a prime.

It is a super-2 number, since 2×1301121331² = 3385833435966423122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1301121361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650560665 + 650560666.

It is an arithmetic number, because the mean of its divisors is an integer number (650560666).

Almost surely, 2^1301121331 is an apocalyptic number.

1301121331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301121331 is an equidigital number, since it uses as much as digits as its factorization.

1301121331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1301121331 is about 36071.0594660040. The cubic root of 1301121331 is about 1091.7065910021.

Adding to 1301121331 its reverse (1331211031), we get a palindrome (2632332362).

The spelling of 1301121331 in words is "one billion, three hundred one million, one hundred twenty-one thousand, three hundred thirty-one".