12311290 has 8 divisors (see below), whose sum is σ = 22160340. Its totient is φ = 4924512.

The previous prime is 12311267. The next prime is 12311311. The reversal of 12311290 is 9211321.

It can be written as a sum of positive squares in 2 ways, for example, as 12257001 + 54289 = 3501^2 + 233^2 .

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

It is a super-2 number, since 2×12311290² = 303135722928200, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 615555 + ... + 615574.

Almost surely, 2^12311290 is an apocalyptic number.

12311290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12311290 is a deficient number, since it is larger than the sum of its proper divisors (9849050).

12311290 is a wasteful number, since it uses less digits than its factorization.

12311290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231136.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 12311290 is about 3508.7447898073. The cubic root of 12311290 is about 230.9056291366.

The spelling of 12311290 in words is "twelve million, three hundred eleven thousand, two hundred ninety".