12313031 has 4 divisors (see below), whose sum is σ = 12410112. Its totient is φ = 12215952.

The previous prime is 12313003. The next prime is 12313043. The reversal of 12313031 is 13031321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13031321 = 19 ⋅685859.

It is a cyclic number.

It is not a de Polignac number, because 12313031 - 2²² = 8118727 is a prime.

It is a super-2 number, since 2×12313031² = 303221464813922, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 12312997 and 12313015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12310031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48350 + ... + 48603.

It is an arithmetic number, because the mean of its divisors is an integer number (3102528).

Almost surely, 2^12313031 is an apocalyptic number.

12313031 is a deficient number, since it is larger than the sum of its proper divisors (97081).

12313031 is an equidigital number, since it uses as much as digits as its factorization.

12313031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97080.

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

The square root of 12313031 is about 3508.9928754559. The cubic root of 12313031 is about 230.9165131234.

Adding to 12313031 its reverse (13031321), we get a palindrome (25344352).

The spelling of 12313031 in words is "twelve million, three hundred thirteen thousand, thirty-one".