213615232 has 16 divisors (see below), whose sum is σ = 425561850. Its totient is φ = 106807552.

The previous prime is 213615197. The next prime is 213615253. The reversal of 213615232 is 232516312.

It can be written as a sum of positive squares in only one way, i.e., 149230656 + 64384576 = 12216^2 + 8024^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 213615197 and 213615206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834307 + ... + 834562.

Almost surely, 2^213615232 is an apocalyptic number.

It is an amenable number.

213615232 is a deficient number, since it is larger than the sum of its proper divisors (211946618).

213615232 is an equidigital number, since it uses as much as digits as its factorization.

213615232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668883 (or 1668871 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 213615232 is about 14615.5818221513. The cubic root of 213615232 is about 597.7837049552.

The spelling of 213615232 in words is "two hundred thirteen million, six hundred fifteen thousand, two hundred thirty-two".