213151112 has 8 divisors (see below), whose sum is σ = 399658350. Its totient is φ = 106575552.

The previous prime is 213151093. The next prime is 213151123. The reversal of 213151112 is 211151312.

It can be written as a sum of positive squares in only one way, i.e., 191379556 + 21771556 = 13834^2 + 4666^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 13321937 + ... + 13321952.

Almost surely, 2^213151112 is an apocalyptic number.

It is an amenable number.

213151112 is a deficient number, since it is larger than the sum of its proper divisors (186507238).

213151112 is a wasteful number, since it uses less digits than its factorization.

213151112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26643895 (or 26643891 counting only the distinct ones).

The product of its digits is 60, while the sum is 17.

The square root of 213151112 is about 14599.6956132654. The cubic root of 213151112 is about 597.3504578402.

The spelling of 213151112 in words is "two hundred thirteen million, one hundred fifty-one thousand, one hundred twelve".