12345031 has 4 divisors (see below), whose sum is σ = 12352072. Its totient is φ = 12337992.

The previous prime is 12345017. The next prime is 12345049. The reversal of 12345031 is 13054321.

12345031 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12345031 - 2¹¹ = 12342983 is a prime.

It is a super-4 number, since 4×12345031⁴ (a number of 29 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12345001) 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, 1441 + ... + 5173.

It is an arithmetic number, because the mean of its divisors is an integer number (3088018).

Almost surely, 2^12345031 is an apocalyptic number.

12345031 is a deficient number, since it is larger than the sum of its proper divisors (7041).

12345031 is an equidigital number, since it uses as much as digits as its factorization.

12345031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7040.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 12345031 is about 3513.5496296481. The cubic root of 12345031 is about 231.1163809528.

Adding to 12345031 its reverse (13054321), we get a palindrome (25399352).

It can be divided in two parts, 123 and 45031, that added together give a palindrome (45154).

The spelling of 12345031 in words is "twelve million, three hundred forty-five thousand, thirty-one".