211431204007 has 2 divisors, whose sum is σ = 211431204008. Its totient is φ = 211431204006.

The previous prime is 211431204001. The next prime is 211431204097. The reversal of 211431204007 is 700402134112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211431204007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211431204001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105715602003 + 105715602004.

It is an arithmetic number, because the mean of its divisors is an integer number (105715602004).

Almost surely, 2^211431204007 is an apocalyptic number.

211431204007 is a deficient number, since it is larger than the sum of its proper divisors (1).

211431204007 is an equidigital number, since it uses as much as digits as its factorization.

211431204007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 211431204007 its reverse (700402134112), we get a palindrome (911833338119).

The spelling of 211431204007 in words is "two hundred eleven billion, four hundred thirty-one million, two hundred four thousand, seven".