212232320 has 32 divisors (see below), whose sum is σ = 507369420. Its totient is φ = 84892672.

The previous prime is 212232311. The next prime is 212232329. The reversal of 212232320 is 23232212.

It is an interprime number because it is at equal distance from previous prime (212232311) and next prime (212232329).

It can be written as a sum of positive squares in 2 ways, for example, as 211295296 + 937024 = 14536^2 + 968^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (212232329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165167 + ... + 166446.

Almost surely, 2^212232320 is an apocalyptic number.

212232320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212232320 is an abundant number, since it is smaller than the sum of its proper divisors (295137100).

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

212232320 is an equidigital number, since it uses as much as digits as its factorization.

212232320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331632 (or 331620 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 212232320 is about 14568.1954956680. The cubic root of 212232320 is about 596.4909247341.

Adding to 212232320 its reverse (23232212), we get a palindrome (235464532).

The spelling of 212232320 in words is "two hundred twelve million, two hundred thirty-two thousand, three hundred twenty".