11211541231 has 8 divisors (see below), whose sum is σ = 12515209344. Its totient is φ = 9955279320.

The previous prime is 11211541217. The next prime is 11211541247. The reversal of 11211541231 is 13214511211.

11211541231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11211541231 - 2⁹ = 11211540719 is a prime.

It is a super-2 number, since 2×11211541231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211541031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11851051 + ... + 11851996.

It is an arithmetic number, because the mean of its divisors is an integer number (1564401168).

Almost surely, 2^11211541231 is an apocalyptic number.

11211541231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11211541231 is a deficient number, since it is larger than the sum of its proper divisors (1303668113).

11211541231 is a wasteful number, since it uses less digits than its factorization.

11211541231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23703101.

The product of its digits is 240, while the sum is 22.

The spelling of 11211541231 in words is "eleven billion, two hundred eleven million, five hundred forty-one thousand, two hundred thirty-one".