1311052531121 has 8 divisors (see below), whose sum is σ = 1342469308224. Its totient is φ = 1279677898800.

The previous prime is 1311052531111. The next prime is 1311052531163. The reversal of 1311052531121 is 1211352501131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311052531121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311052531111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10473230 + ... + 10597671.

It is an arithmetic number, because the mean of its divisors is an integer number (167808663528).

Almost surely, 2^{1311052531121} is an apocalyptic number.

It is an amenable number.

1311052531121 is a deficient number, since it is larger than the sum of its proper divisors (31416777103).

1311052531121 is a wasteful number, since it uses less digits than its factorization.

1311052531121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21072391.

The product of its (nonzero) digits is 900, while the sum is 26.

The spelling of 1311052531121 in words is "one trillion, three hundred eleven billion, fifty-two million, five hundred thirty-one thousand, one hundred twenty-one".