12901311 has 12 divisors (see below), whose sum is σ = 18810792. Its totient is φ = 8519856.

The previous prime is 12901307. The next prime is 12901327. The reversal of 12901311 is 11310921.

It is not a de Polignac number, because 12901311 - 2² = 12901307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12901331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5736 + ... + 7661.

It is an arithmetic number, because the mean of its divisors is an integer number (1567566).

Almost surely, 2^12901311 is an apocalyptic number.

12901311 is a deficient number, since it is larger than the sum of its proper divisors (5909481).

12901311 is a wasteful number, since it uses less digits than its factorization.

12901311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13510 (or 13507 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 12901311 is about 3591.8395008686. The cubic root of 12901311 is about 234.5369545160.

It can be divided in two parts, 1290 and 1311, that added together give a square (2601 = 51²).

The spelling of 12901311 in words is "twelve million, nine hundred one thousand, three hundred eleven".