131033311 has 6 divisors (see below), whose sum is σ = 135397536. Its totient is φ = 126805500.

The previous prime is 131033267. The next prime is 131033327. The reversal of 131033311 is 113330131.

It is not a de Polignac number, because 131033311 - 2¹³ = 131025119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131033011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67215 + ... + 69136.

It is an arithmetic number, because the mean of its divisors is an integer number (22566256).

Almost surely, 2^131033311 is an apocalyptic number.

131033311 is a deficient number, since it is larger than the sum of its proper divisors (4364225).

131033311 is an equidigital number, since it uses as much as digits as its factorization.

131033311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136413 (or 136382 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 131033311 is about 11446.9782475551. The cubic root of 131033311 is about 507.9183520896.

Adding to 131033311 its reverse (113330131), we get a palindrome (244363442).

The spelling of 131033311 in words is "one hundred thirty-one million, thirty-three thousand, three hundred eleven".