212700631 has 8 divisors (see below), whose sum is σ = 249886224. Its totient is φ = 178489920.

The previous prime is 212700599. The next prime is 212700667. The reversal of 212700631 is 136007212.

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 212700631 - 2⁵ = 212700599 is a prime.

It is a super-2 number, since 2×212700631² = 90483116855596322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212700031) 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, 743566 + ... + 743851.

It is an arithmetic number, because the mean of its divisors is an integer number (31235778).

Almost surely, 2^212700631 is an apocalyptic number.

212700631 is a deficient number, since it is larger than the sum of its proper divisors (37185593).

212700631 is a wasteful number, since it uses less digits than its factorization.

212700631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1487441.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 212700631 is about 14584.2597001013. The cubic root of 212700631 is about 596.9293405968.

Adding to 212700631 its reverse (136007212), we get a palindrome (348707843).

The spelling of 212700631 in words is "two hundred twelve million, seven hundred thousand, six hundred thirty-one".