12783071 has 6 divisors (see below), whose sum is σ = 14870160. Its totient is φ = 10956876.

The previous prime is 12783049. The next prime is 12783077. The reversal of 12783071 is 17038721.

It is not a de Polignac number, because 12783071 - 2⁶ = 12783007 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 (12783077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130391 + ... + 130488.

It is an arithmetic number, because the mean of its divisors is an integer number (2478360).

Almost surely, 2^12783071 is an apocalyptic number.

12783071 is a deficient number, since it is larger than the sum of its proper divisors (2087089).

12783071 is an equidigital number, since it uses as much as digits as its factorization.

12783071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260893 (or 260886 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 12783071 is about 3575.3420815357. The cubic root of 12783071 is about 233.8182471087.

It can be divided in two parts, 127830 and 71, that multiplied together give a triangular number (9075930 = T₄₂₆₀).

The spelling of 12783071 in words is "twelve million, seven hundred eighty-three thousand, seventy-one".