131211319 has 2 divisors, whose sum is σ = 131211320. Its totient is φ = 131211318.

The previous prime is 131211317. The next prime is 131211323. The reversal of 131211319 is 913112131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131211319 - 2¹ = 131211317 is a prime.

It is a super-2 number, since 2×131211319² = 34432820467439522, which contains 22 as substring.

Together with 131211317, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 131211319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131211317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65605659 + 65605660.

It is an arithmetic number, because the mean of its divisors is an integer number (65605660).

Almost surely, 2^131211319 is an apocalyptic number.

131211319 is a deficient number, since it is larger than the sum of its proper divisors (1).

131211319 is an equidigital number, since it uses as much as digits as its factorization.

131211319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162, while the sum is 22.

The square root of 131211319 is about 11454.7509357471. The cubic root of 131211319 is about 508.1482494038.

The spelling of 131211319 in words is "one hundred thirty-one million, two hundred eleven thousand, three hundred nineteen".