131443131 has 16 divisors (see below), whose sum is σ = 185123840. Its totient is φ = 82827360.

The previous prime is 131443111. The next prime is 131443157. The reversal of 131443131 is 131344131.

It is not a de Polignac number, because 131443131 - 2⁷ = 131443003 is a prime.

It is a super-2 number, since 2×131443131² = 34554593374166322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131443098 and 131443107.

It is not an unprimeable number, because it can be changed into a prime (131443111) 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, 12436 + ... + 20433.

It is an arithmetic number, because the mean of its divisors is an integer number (11570240).

Almost surely, 2^131443131 is an apocalyptic number.

131443131 is a deficient number, since it is larger than the sum of its proper divisors (53680709).

131443131 is a wasteful number, since it uses less digits than its factorization.

131443131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32946.

The product of its digits is 432, while the sum is 21.

The square root of 131443131 is about 11464.8650668030. The cubic root of 131443131 is about 508.4473230945.

Adding to 131443131 its reverse (131344131), we get a palindrome (262787262).

The spelling of 131443131 in words is "one hundred thirty-one million, four hundred forty-three thousand, one hundred thirty-one".