12911951 has 8 divisors (see below), whose sum is σ = 13933584. Its totient is φ = 11894400.

The previous prime is 12911933. The next prime is 12911957. The reversal of 12911951 is 15911921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12911951 - 2¹⁰ = 12910927 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 (12911957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10151 + ... + 11351.

It is an arithmetic number, because the mean of its divisors is an integer number (1741698).

Almost surely, 2^12911951 is an apocalyptic number.

12911951 is a deficient number, since it is larger than the sum of its proper divisors (1021633).

12911951 is a wasteful number, since it uses less digits than its factorization.

12911951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041.

The product of its digits is 810, while the sum is 29.

The square root of 12911951 is about 3593.3203308361. The cubic root of 12911951 is about 234.6014127582.

The spelling of 12911951 in words is "twelve million, nine hundred eleven thousand, nine hundred fifty-one".