1213524231423 has 16 divisors (see below), whose sum is σ = 1957955063040. Its totient is φ = 652651687296.

The previous prime is 1213524231373. The next prime is 1213524231499. The reversal of 1213524231423 is 3241324253121.

It is a happy number.

It is not a de Polignac number, because 1213524231423 - 2¹³ = 1213524223231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213524231223) 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 15 ways as a sum of consecutive naturals, for example, 1699613413 + ... + 1699614126.

It is an arithmetic number, because the mean of its divisors is an integer number (122372191440).

Almost surely, 2^{1213524231423} is an apocalyptic number.

1213524231423 is a deficient number, since it is larger than the sum of its proper divisors (744430831617).

1213524231423 is a wasteful number, since it uses less digits than its factorization.

1213524231423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3399227566.

The product of its digits is 34560, while the sum is 33.

Adding to 1213524231423 its reverse (3241324253121), we get a palindrome (4454848484544).

The spelling of 1213524231423 in words is "one trillion, two hundred thirteen billion, five hundred twenty-four million, two hundred thirty-one thousand, four hundred twenty-three".