131201131 has 4 divisors (see below), whose sum is σ = 136905552. Its totient is φ = 125496712.

The previous prime is 131201101. The next prime is 131201143. The reversal of 131201131 is 131102131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131102131 = 31 ⋅4229101.

It is a cyclic number.

It is not a de Polignac number, because 131201131 - 2¹⁷ = 131070059 is a prime.

It is a super-2 number, since 2×131201131² = 34427473551358322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131201101) 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 3 ways as a sum of consecutive naturals, for example, 2852176 + ... + 2852221.

It is an arithmetic number, because the mean of its divisors is an integer number (34226388).

Almost surely, 2^131201131 is an apocalyptic number.

131201131 is a deficient number, since it is larger than the sum of its proper divisors (5704421).

131201131 is an equidigital number, since it uses as much as digits as its factorization.

131201131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5704420.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 131201131 is about 11454.3062208062. The cubic root of 131201131 is about 508.1350972144.

Adding to 131201131 its reverse (131102131), we get a palindrome (262303262).

The spelling of 131201131 in words is "one hundred thirty-one million, two hundred one thousand, one hundred thirty-one".