12031313 has 12 divisors (see below), whose sum is σ = 14733360. Its totient is φ = 9769032.

The previous prime is 12031307. The next prime is 12031319. The reversal of 12031313 is 31313021.

It is an interprime number because it is at equal distance from previous prime (12031307) and next prime (12031319).

It is not a de Polignac number, because 12031313 - 2⁴ = 12031297 is a prime.

It is a super-4 number, since 4×12031313⁴ (a number of 29 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (12031319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5531 + ... + 7392.

It is an arithmetic number, because the mean of its divisors is an integer number (1227780).

Almost surely, 2^12031313 is an apocalyptic number.

It is an amenable number.

12031313 is a deficient number, since it is larger than the sum of its proper divisors (2702047).

12031313 is a wasteful number, since it uses less digits than its factorization.

12031313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12956 (or 12949 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 12031313 is about 3468.6183128156. The cubic root of 12031313 is about 229.1418113135.

Adding to 12031313 its reverse (31313021), we get a palindrome (43344334).

The spelling of 12031313 in words is "twelve million, thirty-one thousand, three hundred thirteen".