1312121415 has 32 divisors (see below), whose sum is σ = 2292364800. Its totient is φ = 635592320.

The previous prime is 1312121413. The next prime is 1312121423. The reversal of 1312121415 is 5141212131.

It is not a de Polignac number, because 1312121415 - 2¹ = 1312121413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312121391 and 1312121400.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 214621 + ... + 220649.

It is an arithmetic number, because the mean of its divisors is an integer number (71636400).

Almost surely, 2^1312121415 is an apocalyptic number.

1312121415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1312121415 is a deficient number, since it is larger than the sum of its proper divisors (980243385).

1312121415 is a wasteful number, since it uses less digits than its factorization.

1312121415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7367.

The product of its digits is 240, while the sum is 21.

The square root of 1312121415 is about 36223.2165192436. The cubic root of 1312121415 is about 1094.7745037215.

Adding to 1312121415 its reverse (5141212131), we get a palindrome (6453333546).

The spelling of 1312121415 in words is "one billion, three hundred twelve million, one hundred twenty-one thousand, four hundred fifteen".