212032231309 has 8 divisors (see below), whose sum is σ = 212524025400. Its totient is φ = 211540525056.

The previous prime is 212032231303. The next prime is 212032231319. The reversal of 212032231309 is 903132230212.

It can be written as a sum of positive squares in 4 ways, for example, as 52768981225 + 159263250084 = 229715^2 + 399078^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212032231309 - 2⁵ = 212032231277 is a prime.

It is a super-2 number, since 2×212032231309² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212032231303) 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, 9558459 + ... + 9580615.

It is an arithmetic number, because the mean of its divisors is an integer number (26565503175).

Almost surely, 2^212032231309 is an apocalyptic number.

It is an amenable number.

212032231309 is a deficient number, since it is larger than the sum of its proper divisors (491794091).

212032231309 is a wasteful number, since it uses less digits than its factorization.

212032231309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43919.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 212032231309 in words is "two hundred twelve billion, thirty-two million, two hundred thirty-one thousand, three hundred nine".