212352307489 has 9 divisors (see below), whose sum is σ = 247025824401. Its totient is φ = 182013498660.

The previous prime is 212352307481. The next prime is 212352307507. The reversal of 212352307489 is 984703253212.

The square root of 212352307489 is 460817.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 212352307489 - 2³ = 212352307481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212352307481) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3192804 + ... + 3258634.

Almost surely, 2^212352307489 is an apocalyptic number.

212352307489 is the 460817-th square number.

212352307489 is the 230409-th centered octagonal number.

It is an amenable number.

212352307489 is a deficient number, since it is larger than the sum of its proper divisors (34673516912).

212352307489 is an frugal number, since it uses more digits than its factorization.

212352307489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131676 (or 65838 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

It can be divided in two parts, 212352 and 307489, that added together give a square (519841 = 721²).

The spelling of 212352307489 in words is "two hundred twelve billion, three hundred fifty-two million, three hundred seven thousand, four hundred eighty-nine".