1213326203413 has 4 divisors (see below), whose sum is σ = 1215201515040. Its totient is φ = 1211450891788.

The previous prime is 1213326203389. The next prime is 1213326203437. The reversal of 1213326203413 is 3143026233121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1213326203389) and next prime (1213326203437).

It is a cyclic number.

It is not a de Polignac number, because 1213326203413 - 2²¹ = 1213324106261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213326203113) 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, 937654843 + ... + 937656136.

It is an arithmetic number, because the mean of its divisors is an integer number (303800378760).

Almost surely, 2^{1213326203413} is an apocalyptic number.

It is an amenable number.

1213326203413 is a deficient number, since it is larger than the sum of its proper divisors (1875311627).

1213326203413 is an equidigital number, since it uses as much as digits as its factorization.

1213326203413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875311626.

The product of its (nonzero) digits is 15552, while the sum is 31.

The spelling of 1213326203413 in words is "one trillion, two hundred thirteen billion, three hundred twenty-six million, two hundred three thousand, four hundred thirteen".