1213413243431 has 4 divisors (see below), whose sum is σ = 1213425472392. Its totient is φ = 1213401014472.

The previous prime is 1213413243379. The next prime is 1213413243437. The reversal of 1213413243431 is 1343423143121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213413243431 - 2¹⁰ = 1213413242407 is a prime.

It is a super-2 number, since 2×1213413243431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213413243437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5964416 + ... + 6164501.

It is an arithmetic number, because the mean of its divisors is an integer number (303356368098).

Almost surely, 2^{1213413243431} is an apocalyptic number.

1213413243431 is a deficient number, since it is larger than the sum of its proper divisors (12228961).

1213413243431 is a wasteful number, since it uses less digits than its factorization.

1213413243431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12228960.

The product of its digits is 20736, while the sum is 32.

Adding to 1213413243431 its reverse (1343423143121), we get a palindrome (2556836386552).

The spelling of 1213413243431 in words is "one trillion, two hundred thirteen billion, four hundred thirteen million, two hundred forty-three thousand, four hundred thirty-one".