131433311 has 2 divisors, whose sum is σ = 131433312. Its totient is φ = 131433310.

The previous prime is 131433299. The next prime is 131433319. The reversal of 131433311 is 113334131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131433311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131433319) 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 as a sum of consecutive naturals, namely, 65716655 + 65716656.

It is an arithmetic number, because the mean of its divisors is an integer number (65716656).

Almost surely, 2^131433311 is an apocalyptic number.

131433311 is a deficient number, since it is larger than the sum of its proper divisors (1).

131433311 is an equidigital number, since it uses as much as digits as its factorization.

131433311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 20.

The square root of 131433311 is about 11464.4367938421. The cubic root of 131433311 is about 508.4346608960.

Adding to 131433311 its reverse (113334131), we get a palindrome (244767442).

The spelling of 131433311 in words is "one hundred thirty-one million, four hundred thirty-three thousand, three hundred eleven".