131200011 has 24 divisors (see below), whose sum is σ = 193801920. Its totient is φ = 85503600.

The previous prime is 131200007. The next prime is 131200057. The reversal of 131200011 is 110002131.

It is not a de Polignac number, because 131200011 - 2² = 131200007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 131199966 and 131200002.

It is not an unprimeable number, because it can be changed into a prime (131200411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111456 + ... + 112626.

It is an arithmetic number, because the mean of its divisors is an integer number (8075080).

Almost surely, 2^131200011 is an apocalyptic number.

131200011 is a deficient number, since it is larger than the sum of its proper divisors (62601909).

131200011 is a wasteful number, since it uses less digits than its factorization.

131200011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447 (or 1444 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 131200011 is about 11454.2573307919. The cubic root of 131200011 is about 508.1336513099.

Adding to 131200011 its reverse (110002131), we get a palindrome (241202142).

The spelling of 131200011 in words is "one hundred thirty-one million, two hundred thousand, eleven".