131101211 has 16 divisors (see below), whose sum is σ = 136396800. Its totient is φ = 125955648.

The previous prime is 131101207. The next prime is 131101213. The reversal of 131101211 is 112101131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131101211 - 2² = 131101207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131101192 and 131101201.

It is not an unprimeable number, because it can be changed into a prime (131101213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 732320 + ... + 732498.

It is an arithmetic number, because the mean of its divisors is an integer number (8524800).

Almost surely, 2^131101211 is an apocalyptic number.

131101211 is a deficient number, since it is larger than the sum of its proper divisors (5295589).

131101211 is a wasteful number, since it uses less digits than its factorization.

131101211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 131101211 is about 11449.9437116520. The cubic root of 131101211 is about 508.0060694813.

Adding to 131101211 its reverse (112101131), we get a palindrome (243202342).

The spelling of 131101211 in words is "one hundred thirty-one million, one hundred one thousand, two hundred eleven".