212303211231 has 4 divisors (see below), whose sum is σ = 283070948312. Its totient is φ = 141535474152.

The previous prime is 212303211229. The next prime is 212303211287. The reversal of 212303211231 is 132112303212.

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

It is not a de Polignac number, because 212303211231 - 2¹ = 212303211229 is a prime.

It is a super-2 number, since 2×212303211231² (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 = 212303211198 and 212303211207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212303211431) 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, 35383868536 + ... + 35383868541.

It is an arithmetic number, because the mean of its divisors is an integer number (70767737078).

Almost surely, 2^212303211231 is an apocalyptic number.

212303211231 is a deficient number, since it is larger than the sum of its proper divisors (70767737081).

212303211231 is an equidigital number, since it uses as much as digits as its factorization.

212303211231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70767737080.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 212303211231 its reverse (132112303212), we get a palindrome (344415514443).

The spelling of 212303211231 in words is "two hundred twelve billion, three hundred three million, two hundred eleven thousand, two hundred thirty-one".