211031412 has 24 divisors (see below), whose sum is σ = 496927200. Its totient is φ = 69698016.

The previous prime is 211031407. The next prime is 211031413. The reversal of 211031412 is 214130112.

It is a junction number, because it is equal to n+sod(n) for n = 211031391 and 211031400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211031413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79362 + ... + 81977.

It is an arithmetic number, because the mean of its divisors is an integer number (20705300).

Almost surely, 2^211031412 is an apocalyptic number.

It is an amenable number.

211031412 is an abundant number, since it is smaller than the sum of its proper divisors (285895788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211031412 is a wasteful number, since it uses less digits than its factorization.

211031412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161455 (or 161453 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 211031412 is about 14526.9202517258. The cubic root of 211031412 is about 595.3637227189.

Adding to 211031412 its reverse (214130112), we get a palindrome (425161524).

The spelling of 211031412 in words is "two hundred eleven million, thirty-one thousand, four hundred twelve".