131034287 has 4 divisors (see below), whose sum is σ = 134081640. Its totient is φ = 127986936.

The previous prime is 131034259. The next prime is 131034301. The reversal of 131034287 is 782430131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 782430131 = 7 ⋅111775733.

It is a cyclic number.

It is not a de Polignac number, because 131034287 - 2⁶ = 131034223 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 (131034187) 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 3 ways as a sum of consecutive naturals, for example, 1523612 + ... + 1523697.

It is an arithmetic number, because the mean of its divisors is an integer number (33520410).

Almost surely, 2^131034287 is an apocalyptic number.

131034287 is a deficient number, since it is larger than the sum of its proper divisors (3047353).

131034287 is an equidigital number, since it uses as much as digits as its factorization.

131034287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3047352.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 131034287 is about 11447.0208788138. The cubic root of 131034287 is about 507.9196131610.

The spelling of 131034287 in words is "one hundred thirty-one million, thirty-four thousand, two hundred eighty-seven".