12311390 has 64 divisors (see below), whose sum is σ = 27772416. Its totient is φ = 3825792.

The previous prime is 12311389. The next prime is 12311401. The reversal of 12311390 is 9311321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75449 + ... + 75611.

It is an arithmetic number, because the mean of its divisors is an integer number (433944).

Almost surely, 2^12311390 is an apocalyptic number.

12311390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12311390 is an abundant number, since it is smaller than the sum of its proper divisors (15461026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12311390 is a wasteful number, since it uses less digits than its factorization.

12311390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 12311390 is about 3508.7590398886. The cubic root of 12311390 is about 230.9062543216.

The spelling of 12311390 in words is "twelve million, three hundred eleven thousand, three hundred ninety".