212532913 has 4 divisors (see below), whose sum is σ = 212580900. Its totient is φ = 212484928.

The previous prime is 212532907. The next prime is 212533001. The reversal of 212532913 is 319235212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148644864 + 63888049 = 12192^2 + 7993^2 .

It is a cyclic number.

It is not a de Polignac number, because 212532913 - 2⁹ = 212532401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212532013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16588 + ... + 26461.

It is an arithmetic number, because the mean of its divisors is an integer number (53145225).

Almost surely, 2^212532913 is an apocalyptic number.

It is an amenable number.

212532913 is a deficient number, since it is larger than the sum of its proper divisors (47987).

212532913 is an equidigital number, since it uses as much as digits as its factorization.

212532913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47986.

The product of its digits is 3240, while the sum is 28.

The square root of 212532913 is about 14578.5085999906. The cubic root of 212532913 is about 596.7724030887.

The spelling of 212532913 in words is "two hundred twelve million, five hundred thirty-two thousand, nine hundred thirteen".