12705031 has 2 divisors, whose sum is σ = 12705032. Its totient is φ = 12705030.

The previous prime is 12704999. The next prime is 12705041. The reversal of 12705031 is 13050721.

12705031 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12705031 - 2⁵ = 12704999 is a prime.

It is a super-3 number, since 3×12705031³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12705041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6352515 + 6352516.

It is an arithmetic number, because the mean of its divisors is an integer number (6352516).

Almost surely, 2^12705031 is an apocalyptic number.

12705031 is a deficient number, since it is larger than the sum of its proper divisors (1).

12705031 is an equidigital number, since it uses as much as digits as its factorization.

12705031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 12705031 is about 3564.4117326706. The cubic root of 12705031 is about 233.3414593542.

Adding to 12705031 its reverse (13050721), we get a palindrome (25755752).

The spelling of 12705031 in words is "twelve million, seven hundred five thousand, thirty-one".