1312121411 has 8 divisors (see below), whose sum is σ = 1369906944. Its totient is φ = 1254397320.

The previous prime is 1312121389. The next prime is 1312121413. The reversal of 1312121411 is 1141212131.

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-1312121411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312121411.

It is not an unprimeable number, because it can be changed into a prime (1312121413) 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, 31346 + ... + 60056.

It is an arithmetic number, because the mean of its divisors is an integer number (171238368).

Almost surely, 2^1312121411 is an apocalyptic number.

1312121411 is a deficient number, since it is larger than the sum of its proper divisors (57785533).

1312121411 is a wasteful number, since it uses less digits than its factorization.

1312121411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30721.

The product of its digits is 48, while the sum is 17.

The square root of 1312121411 is about 36223.2164640304. The cubic root of 1312121411 is about 1094.7745026090.

Adding to 1312121411 its reverse (1141212131), we get a palindrome (2453333542).

The spelling of 1312121411 in words is "one billion, three hundred twelve million, one hundred twenty-one thousand, four hundred eleven".