213203112 has 32 divisors (see below), whose sum is σ = 540967200. Its totient is φ = 70006464.

The previous prime is 213203063. The next prime is 213203117. The reversal of 213203112 is 211302312.

It is a junction number, because it is equal to n+sod(n) for n = 213203091 and 213203100.

It is not an unprimeable number, because it can be changed into a prime (213203117) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 64687 + ... + 67902.

It is an arithmetic number, because the mean of its divisors is an integer number (16905225).

Almost surely, 2^213203112 is an apocalyptic number.

It is an amenable number.

213203112 is an abundant number, since it is smaller than the sum of its proper divisors (327764088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213203112 is a wasteful number, since it uses less digits than its factorization.

213203112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132665 (or 132661 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 213203112 is about 14601.4763637106. The cubic root of 213203112 is about 597.3990301072.

Adding to 213203112 its reverse (211302312), we get a palindrome (424505424).

The spelling of 213203112 in words is "two hundred thirteen million, two hundred three thousand, one hundred twelve".