1213450444323 has 40 divisors (see below), whose sum is σ = 1955506764288. Its totient is φ = 745444187136.

The previous prime is 1213450444307. The next prime is 1213450444331. The reversal of 1213450444323 is 3234440543121.

1213450444323 is a `hidden beast` number, since 1 + 2 + 134 + 50 + 44 + 432 + 3 = 666.

It is not a de Polignac number, because 1213450444323 - 2⁴ = 1213450444307 is a prime.

It is a super-2 number, since 2×1213450444323² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1213450464323) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 391011 + ... + 1606172.

Almost surely, 2^{1213450444323} is an apocalyptic number.

1213450444323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1213450444323 is a deficient number, since it is larger than the sum of its proper divisors (742056319965).

1213450444323 is a wasteful number, since it uses less digits than its factorization.

1213450444323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997785 (or 1997776 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 1213450444323 its reverse (3234440543121), we get a palindrome (4447890987444).

The spelling of 1213450444323 in words is "one trillion, two hundred thirteen billion, four hundred fifty million, four hundred forty-four thousand, three hundred twenty-three".