1213423513431 has 8 divisors (see below), whose sum is σ = 1617904765440. Its totient is φ = 808945635192.

The previous prime is 1213423513373. The next prime is 1213423513487. The reversal of 1213423513431 is 1343153243121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1213423513431 - 2¹⁹ = 1213422989143 is a prime.

It is a super-2 number, since 2×1213423513431² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1213423513392 and 1213423513401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213423513031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169596 + ... + 1567038.

It is an arithmetic number, because the mean of its divisors is an integer number (202238095680).

Almost surely, 2^{1213423513431} is an apocalyptic number.

1213423513431 is a deficient number, since it is larger than the sum of its proper divisors (404481252009).

1213423513431 is a wasteful number, since it uses less digits than its factorization.

1213423513431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686885.

The product of its digits is 25920, while the sum is 33.

Adding to 1213423513431 its reverse (1343153243121), we get a palindrome (2556576756552).

The spelling of 1213423513431 in words is "one trillion, two hundred thirteen billion, four hundred twenty-three million, five hundred thirteen thousand, four hundred thirty-one".