213001563523 has 8 divisors (see below), whose sum is σ = 243440743680. Its totient is φ = 182564979720.

The previous prime is 213001563499. The next prime is 213001563539. The reversal of 213001563523 is 325365100312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213001563523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213001563583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469993 + ... + 804298.

It is an arithmetic number, because the mean of its divisors is an integer number (30430092960).

Almost surely, 2^213001563523 is an apocalyptic number.

213001563523 is a deficient number, since it is larger than the sum of its proper divisors (30439180157).

213001563523 is a wasteful number, since it uses less digits than its factorization.

213001563523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298177.

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 213001563523 its reverse (325365100312), we get a palindrome (538366663835).

The spelling of 213001563523 in words is "two hundred thirteen billion, one million, five hundred sixty-three thousand, five hundred twenty-three".