213033452531 has 4 divisors (see below), whose sum is σ = 213038839464. Its totient is φ = 213028065600.

The previous prime is 213033452507. The next prime is 213033452551. The reversal of 213033452531 is 135254330312.

213033452531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213033452531 is a prime.

It is a super-2 number, since 2×213033452531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213033452501) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2633705 + ... + 2713386.

It is an arithmetic number, because the mean of its divisors is an integer number (53259709866).

Almost surely, 2^213033452531 is an apocalyptic number.

213033452531 is a deficient number, since it is larger than the sum of its proper divisors (5386933).

213033452531 is an equidigital number, since it uses as much as digits as its factorization.

213033452531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5386932.

The product of its (nonzero) digits is 32400, while the sum is 32.

Adding to 213033452531 its reverse (135254330312), we get a palindrome (348287782843).

The spelling of 213033452531 in words is "two hundred thirteen billion, thirty-three million, four hundred fifty-two thousand, five hundred thirty-one".