211431413441 has 16 divisors (see below), whose sum is σ = 215435179008. Its totient is φ = 207465772800.

The previous prime is 211431413437. The next prime is 211431413471. The reversal of 211431413441 is 144314134112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211431413441 - 2² = 211431413437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211431413411) 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, 10468745 + ... + 10488921.

It is an arithmetic number, because the mean of its divisors is an integer number (13464698688).

Almost surely, 2^211431413441 is an apocalyptic number.

It is an amenable number.

211431413441 is a deficient number, since it is larger than the sum of its proper divisors (4003765567).

211431413441 is a wasteful number, since it uses less digits than its factorization.

211431413441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21112.

The product of its digits is 4608, while the sum is 29.

Adding to 211431413441 its reverse (144314134112), we get a palindrome (355745547553).

The spelling of 211431413441 in words is "two hundred eleven billion, four hundred thirty-one million, four hundred thirteen thousand, four hundred forty-one".