212030312031 has 6 divisors (see below), whose sum is σ = 306266006280. Its totient is φ = 141353541348.

The previous prime is 212030312003. The next prime is 212030312047. The reversal of 212030312031 is 130213030212.

212030312031 is a `hidden beast` number, since 212 + 0 + 303 + 120 + 31 = 666.

It is not a de Polignac number, because 212030312031 - 2¹⁹ = 212029787743 is a prime.

It is a super-2 number, since 2×212030312031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212030311995 and 212030312013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212030412031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11779461771 + ... + 11779461788.

It is an arithmetic number, because the mean of its divisors is an integer number (51044334380).

Almost surely, 2^212030312031 is an apocalyptic number.

212030312031 is a deficient number, since it is larger than the sum of its proper divisors (94235694249).

212030312031 is a wasteful number, since it uses less digits than its factorization.

212030312031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23558923565 (or 23558923562 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 212030312031 its reverse (130213030212), we get a palindrome (342243342243).

The spelling of 212030312031 in words is "two hundred twelve billion, thirty million, three hundred twelve thousand, thirty-one".