212308957 has 8 divisors (see below), whose sum is σ = 246056832. Its totient is φ = 179415600.

The previous prime is 212308933. The next prime is 212308973. The reversal of 212308957 is 759803212.

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

It is not a de Polignac number, because 212308957 - 2⁷ = 212308829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212308357) 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 7 ways as a sum of consecutive naturals, for example, 213094 + ... + 214087.

It is an arithmetic number, because the mean of its divisors is an integer number (30757104).

Almost surely, 2^212308957 is an apocalyptic number.

It is an amenable number.

212308957 is a deficient number, since it is larger than the sum of its proper divisors (33747875).

212308957 is an equidigital number, since it uses as much as digits as its factorization.

212308957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427259.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 212308957 is about 14570.8255428442. The cubic root of 212308957 is about 596.5627136331.

The spelling of 212308957 in words is "two hundred twelve million, three hundred eight thousand, nine hundred fifty-seven".