211431204026 has 16 divisors (see below), whose sum is σ = 365661048384. Its totient is φ = 89811484224.

The previous prime is 211431204007. The next prime is 211431204097. The reversal of 211431204026 is 620402134112.

It is a junction number, because it is equal to n+sod(n) for n = 211431203986 and 211431204004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66822440 + ... + 66825603.

It is an arithmetic number, because the mean of its divisors is an integer number (22853815524).

Almost surely, 2^211431204026 is an apocalyptic number.

211431204026 is a deficient number, since it is larger than the sum of its proper divisors (154229844358).

211431204026 is a wasteful number, since it uses less digits than its factorization.

211431204026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133648165.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 211431204026 its reverse (620402134112), we get a palindrome (831833338138).

The spelling of 211431204026 in words is "two hundred eleven billion, four hundred thirty-one million, two hundred four thousand, twenty-six".