213251012 has 24 divisors (see below), whose sum is σ = 409484376. Its totient is φ = 96565248.

The previous prime is 213251011. The next prime is 213251023. The reversal of 213251012 is 210152312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12292036 + 200958976 = 3506^2 + 14176^2 .

It is not an unprimeable number, because it can be changed into a prime (213251011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35933 + ... + 41444.

It is an arithmetic number, because the mean of its divisors is an integer number (17061849).

Almost surely, 2^213251012 is an apocalyptic number.

It is an amenable number.

213251012 is a deficient number, since it is larger than the sum of its proper divisors (196233364).

213251012 is a wasteful number, since it uses less digits than its factorization.

213251012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77447 (or 77445 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 213251012 is about 14603.1165166892. The cubic root of 213251012 is about 597.4437656500.

The spelling of 213251012 in words is "two hundred thirteen million, two hundred fifty-one thousand, twelve".