331134487 has 2 divisors, whose sum is σ = 331134488. Its totient is φ = 331134486.

The previous prime is 331134439. The next prime is 331134493. The reversal of 331134487 is 784431133.

It is a strong prime.

It is an emirp because it is prime and its reverse (784431133) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331134487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331137487) 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, 165567243 + 165567244.

It is an arithmetic number, because the mean of its divisors is an integer number (165567244).

Almost surely, 2^331134487 is an apocalyptic number.

331134487 is a deficient number, since it is larger than the sum of its proper divisors (1).

331134487 is an equidigital number, since it uses as much as digits as its factorization.

331134487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The square root of 331134487 is about 18197.1010603338. The cubic root of 331134487 is about 691.8333147652.

The spelling of 331134487 in words is "three hundred thirty-one million, one hundred thirty-four thousand, four hundred eighty-seven".