1213233530536 has 32 divisors (see below), whose sum is σ = 2477110212000. Its totient is φ = 554872683456.

The previous prime is 1213233530527. The next prime is 1213233530543. The reversal of 1213233530536 is 6350353323121.

It is a junction number, because it is equal to n+sod(n) for n = 1213233530495 and 1213233530504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137612826 + ... + 137621641.

It is an arithmetic number, because the mean of its divisors is an integer number (77409694125).

Almost surely, 2^{1213233530536} is an apocalyptic number.

It is an amenable number.

1213233530536 is an abundant number, since it is smaller than the sum of its proper divisors (1263876681464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213233530536 is a wasteful number, since it uses less digits than its factorization.

1213233530536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275234521 (or 275234517 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 37.

Adding to 1213233530536 its reverse (6350353323121), we get a palindrome (7563586853657).

The spelling of 1213233530536 in words is "one trillion, two hundred thirteen billion, two hundred thirty-three million, five hundred thirty thousand, five hundred thirty-six".