12845731 has 2 divisors, whose sum is σ = 12845732. Its totient is φ = 12845730.

The previous prime is 12845719. The next prime is 12845743. The reversal of 12845731 is 13754821.

12845731 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (12845719) and next prime (12845743).

It is a cyclic number.

It is not a de Polignac number, because 12845731 - 2¹⁵ = 12812963 is a prime.

It is a super-2 number, since 2×12845731² = 330025609848722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12845693 and 12845702.

It is not a weakly prime, because it can be changed into another prime (12845831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6422865 + 6422866.

It is an arithmetic number, because the mean of its divisors is an integer number (6422866).

Almost surely, 2^12845731 is an apocalyptic number.

12845731 is a deficient number, since it is larger than the sum of its proper divisors (1).

12845731 is an equidigital number, since it uses as much as digits as its factorization.

12845731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

The square root of 12845731 is about 3584.0941672897. The cubic root of 12845731 is about 234.1996676485.

The spelling of 12845731 in words is "twelve million, eight hundred forty-five thousand, seven hundred thirty-one".