1213233530535 has 80 divisors (see below), whose sum is σ = 2347566883200. Its totient is φ = 595897274880.

The previous prime is 1213233530527. The next prime is 1213233530543. The reversal of 1213233530535 is 5350353323121.

It is a happy number.

1213233530535 is a `hidden beast` number, since 1 + 2 + 13 + 2 + 335 + 305 + 3 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1213233530527) and next prime (1213233530543).

It is not a de Polignac number, because 1213233530535 - 2³ = 1213233530527 is a prime.

It is a super-2 number, since 2×1213233530535² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1213233530535.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2001891 + ... + 2536539.

It is an arithmetic number, because the mean of its divisors is an integer number (29344586040).

Almost surely, 2^{1213233530535} is an apocalyptic number.

1213233530535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1213233530535 is a deficient number, since it is larger than the sum of its proper divisors (1134333352665).

1213233530535 is a wasteful number, since it uses less digits than its factorization.

1213233530535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535110 (or 535101 counting only the distinct ones).

The product of its (nonzero) digits is 121500, while the sum is 36.

Adding to 1213233530535 its reverse (5350353323121), we get a palindrome (6563586853656).

The spelling of 1213233530535 in words is "one trillion, two hundred thirteen billion, two hundred thirty-three million, five hundred thirty thousand, five hundred thirty-five".