212630957 has 32 divisors (see below), whose sum is σ = 282009600. Its totient is φ = 155304000.

The previous prime is 212630939. The next prime is 212630983. The reversal of 212630957 is 759036212.

It is a cyclic number.

It is not a de Polignac number, because 212630957 - 2¹⁶ = 212565421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212630927) 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 31 ways as a sum of consecutive naturals, for example, 147044 + ... + 148482.

It is an arithmetic number, because the mean of its divisors is an integer number (8812800).

Almost surely, 2^212630957 is an apocalyptic number.

It is an amenable number.

212630957 is a deficient number, since it is larger than the sum of its proper divisors (69378643).

212630957 is a wasteful number, since it uses less digits than its factorization.

212630957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 212630957 is about 14581.8708333327. The cubic root of 212630957 is about 596.8641550874.

The spelling of 212630957 in words is "two hundred twelve million, six hundred thirty thousand, nine hundred fifty-seven".