12319906 has 4 divisors (see below), whose sum is σ = 18479862. Its totient is φ = 6159952.

The previous prime is 12319877. The next prime is 12319907. The reversal of 12319906 is 60991321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60991321 = 29 ⋅2103149.

It can be written as a sum of positive squares in only one way, i.e., 11526025 + 793881 = 3395^2 + 891^2 .

It is a super-3 number, since 3×12319906³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12319907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3079975 + ... + 3079978.

Almost surely, 2^12319906 is an apocalyptic number.

12319906 is a deficient number, since it is larger than the sum of its proper divisors (6159956).

12319906 is an equidigital number, since it uses as much as digits as its factorization.

12319906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6159955.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 12319906 is about 3509.9723645636. The cubic root of 12319906 is about 230.9594826584.

It can be divided in two parts, 12319 and 906, that added together give a square (13225 = 115²).

The spelling of 12319906 in words is "twelve million, three hundred nineteen thousand, nine hundred six".