131334493 has 2 divisors, whose sum is σ = 131334494. Its totient is φ = 131334492.

The previous prime is 131334461. The next prime is 131334499. The reversal of 131334493 is 394433131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73908409 + 57426084 = 8597^2 + 7578^2 .

It is an emirp because it is prime and its reverse (394433131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131334493 - 2⁵ = 131334461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131334499) 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, 65667246 + 65667247.

It is an arithmetic number, because the mean of its divisors is an integer number (65667247).

Almost surely, 2^131334493 is an apocalyptic number.

It is an amenable number.

131334493 is a deficient number, since it is larger than the sum of its proper divisors (1).

131334493 is an equidigital number, since it uses as much as digits as its factorization.

131334493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 31.

The square root of 131334493 is about 11460.1262209454. The cubic root of 131334493 is about 508.3072069226.

The spelling of 131334493 in words is "one hundred thirty-one million, three hundred thirty-four thousand, four hundred ninety-three".