211043231401 has 4 divisors (see below), whose sum is σ = 211070565712. Its totient is φ = 211015897092.

The previous prime is 211043231383. The next prime is 211043231423. The reversal of 211043231401 is 104132340112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211043231401 - 2²³ = 211034842793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211043235401) 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, 13655571 + ... + 13671016.

It is an arithmetic number, because the mean of its divisors is an integer number (52767641428).

Almost surely, 2^211043231401 is an apocalyptic number.

It is an amenable number.

211043231401 is a deficient number, since it is larger than the sum of its proper divisors (27334311).

211043231401 is an equidigital number, since it uses as much as digits as its factorization.

211043231401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27334310.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 211043231401 its reverse (104132340112), we get a palindrome (315175571513).

The spelling of 211043231401 in words is "two hundred eleven billion, forty-three million, two hundred thirty-one thousand, four hundred one".