213243052 has 24 divisors (see below), whose sum is σ = 409706640. Its totient is φ = 96308160.

The previous prime is 213243049. The next prime is 213243067. The reversal of 213243052 is 250342312.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8527 + ... + 22342.

It is an arithmetic number, because the mean of its divisors is an integer number (17071110).

Almost surely, 2^213243052 is an apocalyptic number.

213243052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213243052 is a deficient number, since it is larger than the sum of its proper divisors (196463588).

213243052 is a wasteful number, since it uses less digits than its factorization.

213243052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31041 (or 31039 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 213243052 is about 14602.8439695835. The cubic root of 213243052 is about 597.4363319822.

Adding to 213243052 its reverse (250342312), we get a palindrome (463585364).

The spelling of 213243052 in words is "two hundred thirteen million, two hundred forty-three thousand, fifty-two".