213261536 has 24 divisors (see below), whose sum is σ = 426129480. Its totient is φ = 105038208.

The previous prime is 213261523. The next prime is 213261547. The reversal of 213261536 is 635162312.

It is a junction number, because it is equal to n+sod(n) for n = 213261499 and 213261508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47591 + ... + 51878.

It is an arithmetic number, because the mean of its divisors is an integer number (17755395).

Almost surely, 2^213261536 is an apocalyptic number.

It is an amenable number.

213261536 is a deficient number, since it is larger than the sum of its proper divisors (212867944).

213261536 is an equidigital number, since it uses as much as digits as its factorization.

213261536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99546 (or 99538 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 213261536 is about 14603.4768462856. The cubic root of 213261536 is about 597.4535934967.

The spelling of 213261536 in words is "two hundred thirteen million, two hundred sixty-one thousand, five hundred thirty-six".