12771351 has 14 divisors (see below), whose sum is σ = 19149360. Its totient is φ = 8513748.

The previous prime is 12771337. The next prime is 12771391. The reversal of 12771351 is 15317721.

It is a happy number.

It is not a de Polignac number, because 12771351 - 2¹⁰ = 12770327 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12771391) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 8031 + ... + 9488.

Almost surely, 2^12771351 is an apocalyptic number.

12771351 is a deficient number, since it is larger than the sum of its proper divisors (6378009).

12771351 is an frugal number, since it uses more digits than its factorization.

12771351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17537 (or 17522 counting only the distinct ones).

The product of its digits is 1470, while the sum is 27.

The square root of 12771351 is about 3573.7027016807. The cubic root of 12771351 is about 233.7467674732.

It can be divided in two parts, 1277 and 1351, that added together give a triangular number (2628 = T₇₂).

The spelling of 12771351 in words is "twelve million, seven hundred seventy-one thousand, three hundred fifty-one".