212413251 has 8 divisors (see below), whose sum is σ = 290125584. Its totient is φ = 138154880.

The previous prime is 212413247. The next prime is 212413259. The reversal of 212413251 is 152314212.

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 212413251 - 2² = 212413247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212413259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 863346 + ... + 863591.

It is an arithmetic number, because the mean of its divisors is an integer number (36265698).

Almost surely, 2^212413251 is an apocalyptic number.

212413251 is a deficient number, since it is larger than the sum of its proper divisors (77712333).

212413251 is a wasteful number, since it uses less digits than its factorization.

212413251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726981.

The product of its digits is 480, while the sum is 21.

The square root of 212413251 is about 14574.4039672297. The cubic root of 212413251 is about 596.6603821871.

Adding to 212413251 its reverse (152314212), we get a palindrome (364727463).

The spelling of 212413251 in words is "two hundred twelve million, four hundred thirteen thousand, two hundred fifty-one".