1301121311 has 16 divisors (see below), whose sum is σ = 1567910400. Its totient is φ = 1054759968.

The previous prime is 1301121271. The next prime is 1301121331. The reversal of 1301121311 is 1131211031.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1301121311 - 2¹⁸ = 1300859167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301121331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73550 + ... + 89508.

It is an arithmetic number, because the mean of its divisors is an integer number (97994400).

Almost surely, 2^1301121311 is an apocalyptic number.

1301121311 is a deficient number, since it is larger than the sum of its proper divisors (266789089).

1301121311 is a wasteful number, since it uses less digits than its factorization.

1301121311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16598.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1301121311 is about 36071.0591887735. The cubic root of 1301121311 is about 1091.7065854084.

Adding to 1301121311 its reverse (1131211031), we get a palindrome (2432332342).

The spelling of 1301121311 in words is "one billion, three hundred one million, one hundred twenty-one thousand, three hundred eleven".