211004034431 has 4 divisors (see below), whose sum is σ = 211005003000. Its totient is φ = 211003065864.

The previous prime is 211004034421. The next prime is 211004034463. The reversal of 211004034431 is 134430400112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 211004034431 - 2³⁴ = 193824165247 is a prime.

It is a super-2 number, since 2×211004034431² (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 = 211004034397 and 211004034406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211004034421) 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, 12065 + ... + 649733.

It is an arithmetic number, because the mean of its divisors is an integer number (52751250750).

Almost surely, 2^211004034431 is an apocalyptic number.

211004034431 is a deficient number, since it is larger than the sum of its proper divisors (968569).

211004034431 is an equidigital number, since it uses as much as digits as its factorization.

211004034431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968568.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 211004034431 its reverse (134430400112), we get a palindrome (345434434543).

The spelling of 211004034431 in words is "two hundred eleven billion, four million, thirty-four thousand, four hundred thirty-one".