1312121003113 has 4 divisors (see below), whose sum is σ = 1312608239748. Its totient is φ = 1311633766480.

The previous prime is 1312121003087. The next prime is 1312121003131. The reversal of 1312121003113 is 3113001212131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 195795630144 + 1116325372969 = 442488^2 + 1056563^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312121003113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312121003153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243614278 + ... + 243619663.

It is an arithmetic number, because the mean of its divisors is an integer number (328152059937).

Almost surely, 2^{1312121003113} is an apocalyptic number.

It is an amenable number.

1312121003113 is a deficient number, since it is larger than the sum of its proper divisors (487236635).

1312121003113 is an equidigital number, since it uses as much as digits as its factorization.

1312121003113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487236634.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1312121003113 its reverse (3113001212131), we get a palindrome (4425122215244).

The spelling of 1312121003113 in words is "one trillion, three hundred twelve billion, one hundred twenty-one million, three thousand, one hundred thirteen".