212323202231 has 16 divisors (see below), whose sum is σ = 244120808448. Its totient is φ = 180892572000.

The previous prime is 212323202197. The next prime is 212323202233. The reversal of 212323202231 is 132202323212.

It is a de Polignac number, because none of the positive numbers 2^k-212323202231 is a prime.

It is a super-2 number, since 2×212323202231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212323202197 and 212323202206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212323202233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5151656 + ... + 5192706.

It is an arithmetic number, because the mean of its divisors is an integer number (15257550528).

Almost surely, 2^212323202231 is an apocalyptic number.

212323202231 is a deficient number, since it is larger than the sum of its proper divisors (31797606217).

212323202231 is a wasteful number, since it uses less digits than its factorization.

212323202231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45502.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 212323202231 its reverse (132202323212), we get a palindrome (344525525443).

The spelling of 212323202231 in words is "two hundred twelve billion, three hundred twenty-three million, two hundred two thousand, two hundred thirty-one".