211331432013 has 32 divisors (see below), whose sum is σ = 316779289344. Its totient is φ = 124342513152.

The previous prime is 211331431991. The next prime is 211331432023. The reversal of 211331432013 is 310234133112.

It is not a de Polignac number, because 211331432013 - 2⁵ = 211331431981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211331432023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2097295 + ... + 2195747.

It is an arithmetic number, because the mean of its divisors is an integer number (9899352792).

Almost surely, 2^211331432013 is an apocalyptic number.

211331432013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

211331432013 is a deficient number, since it is larger than the sum of its proper divisors (105447857331).

211331432013 is a wasteful number, since it uses less digits than its factorization.

211331432013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100885.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 211331432013 its reverse (310234133112), we get a palindrome (521565565125).

The spelling of 211331432013 in words is "two hundred eleven billion, three hundred thirty-one million, four hundred thirty-two thousand, thirteen".