212763831 has 12 divisors (see below), whose sum is σ = 330001272. Its totient is φ = 121579248.

The previous prime is 212763797. The next prime is 212763833. The reversal of 212763831 is 138367212.

It is not a de Polignac number, because 212763831 - 2⁹ = 212763319 is a prime.

It is a super-2 number, since 2×212763831² = 90536895563593122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212763792 and 212763801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212763833) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 723540 + ... + 723833.

It is an arithmetic number, because the mean of its divisors is an integer number (27500106).

Almost surely, 2^212763831 is an apocalyptic number.

212763831 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

212763831 is a deficient number, since it is larger than the sum of its proper divisors (117237441).

212763831 is a wasteful number, since it uses less digits than its factorization.

212763831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447390 (or 1447383 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 212763831 is about 14586.4262586831. The cubic root of 212763831 is about 596.9884568584.

The spelling of 212763831 in words is "two hundred twelve million, seven hundred sixty-three thousand, eight hundred thirty-one".