213031552 has 32 divisors (see below), whose sum is σ = 425095200. Its totient is φ = 106341120.

The previous prime is 213031549. The next prime is 213031561. The reversal of 213031552 is 255130312.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-3 number, since 3×213031552³ (a number of 26 digits) contains 333 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 116727 + ... + 118537.

It is an arithmetic number, because the mean of its divisors is an integer number (13284225).

Almost surely, 2^213031552 is an apocalyptic number.

It is an amenable number.

213031552 is a deficient number, since it is larger than the sum of its proper divisors (212063648).

213031552 is an equidigital number, since it uses as much as digits as its factorization.

213031552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2744 (or 2732 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 213031552 is about 14595.6004330072. The cubic root of 213031552 is about 597.2387490191.

Adding to 213031552 its reverse (255130312), we get a palindrome (468161864).

The spelling of 213031552 in words is "two hundred thirteen million, thirty-one thousand, five hundred fifty-two".