212010023231 has 4 divisors (see below), whose sum is σ = 221227850352. Its totient is φ = 202792196112.

The previous prime is 212010023209. The next prime is 212010023287. The reversal of 212010023231 is 132320010212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212010023231 - 2¹⁰ = 212010022207 is a prime.

It is a super-2 number, since 2×212010023231² (a number of 23 digits) 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 (212010023131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4608913526 + ... + 4608913571.

It is an arithmetic number, because the mean of its divisors is an integer number (55306962588).

Almost surely, 2^212010023231 is an apocalyptic number.

212010023231 is a deficient number, since it is larger than the sum of its proper divisors (9217827121).

212010023231 is an equidigital number, since it uses as much as digits as its factorization.

212010023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9217827120.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 212010023231 its reverse (132320010212), we get a palindrome (344330033443).

The spelling of 212010023231 in words is "two hundred twelve billion, ten million, twenty-three thousand, two hundred thirty-one".