213531536 has 10 divisors (see below), whose sum is σ = 413717382. Its totient is φ = 106765760.

The previous prime is 213531523. The next prime is 213531569. The reversal of 213531536 is 635135312.

213531536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 211411600 + 2119936 = 14540^2 + 1456^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213531499 and 213531508.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6672845 + ... + 6672876.

Almost surely, 2^213531536 is an apocalyptic number.

It is an amenable number.

213531536 is a deficient number, since it is larger than the sum of its proper divisors (200185846).

213531536 is a wasteful number, since it uses less digits than its factorization.

213531536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13345729 (or 13345723 counting only the distinct ones).

The product of its digits is 8100, while the sum is 29.

The square root of 213531536 is about 14612.7182960598. The cubic root of 213531536 is about 597.7056227569.

Adding to 213531536 its reverse (635135312), we get a palindrome (848666848).

The spelling of 213531536 in words is "two hundred thirteen million, five hundred thirty-one thousand, five hundred thirty-six".