212013235231 has 48 divisors (see below), whose sum is σ = 252215424000. Its totient is φ = 177670983168.

The previous prime is 212013235229. The next prime is 212013235237. The reversal of 212013235231 is 132532310212.

It is not a de Polignac number, because 212013235231 - 2¹ = 212013235229 is a prime.

It is a super-2 number, since 2×212013235231² (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 = 212013235196 and 212013235205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212013235237) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 127029265 + ... + 127030933.

It is an arithmetic number, because the mean of its divisors is an integer number (5254488000).

Almost surely, 2^212013235231 is an apocalyptic number.

212013235231 is a deficient number, since it is larger than the sum of its proper divisors (40202188769).

212013235231 is a wasteful number, since it uses less digits than its factorization.

212013235231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096 (or 2089 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 212013235231 its reverse (132532310212), we get a palindrome (344545545443).

The spelling of 212013235231 in words is "two hundred twelve billion, thirteen million, two hundred thirty-five thousand, two hundred thirty-one".