13281031 has 2 divisors, whose sum is σ = 13281032. Its totient is φ = 13281030.

The previous prime is 13281017. The next prime is 13281041. The reversal of 13281031 is 13018231.

13281031 is digitally balanced in base 2, because in such base 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 13281031 - 2¹¹ = 13278983 is a prime.

It is a super-2 number, since 2×13281031² = 352771568845922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13281001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6640515 + 6640516.

It is an arithmetic number, because the mean of its divisors is an integer number (6640516).

Almost surely, 2^13281031 is an apocalyptic number.

13281031 is a deficient number, since it is larger than the sum of its proper divisors (1).

13281031 is an equidigital number, since it uses as much as digits as its factorization.

13281031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 13281031 is about 3644.3148876023. The cubic root of 13281031 is about 236.8157576313.

Adding to 13281031 its reverse (13018231), we get a palindrome (26299262).

The spelling of 13281031 in words is "thirteen million, two hundred eighty-one thousand, thirty-one".