211434031011 has 48 divisors (see below), whose sum is σ = 337547377664. Its totient is φ = 115310777472.

The previous prime is 211434030991. The next prime is 211434031013. The reversal of 211434031011 is 110130434112.

It is not a de Polignac number, because 211434031011 - 2⁵ = 211434030979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (211434031013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5055990 + ... + 5097636.

Almost surely, 2^211434031011 is an apocalyptic number.

211434031011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

211434031011 is a deficient number, since it is larger than the sum of its proper divisors (126113346653).

211434031011 is a wasteful number, since it uses less digits than its factorization.

211434031011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42160 (or 42137 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 211434031011 its reverse (110130434112), we get a palindrome (321564465123).

The spelling of 211434031011 in words is "two hundred eleven billion, four hundred thirty-four million, thirty-one thousand, eleven".