13145031 has 16 divisors (see below), whose sum is σ = 19530720. Its totient is φ = 8737920.

The previous prime is 13145021. The next prime is 13145053. The reversal of 13145031 is 13054131.

13145031 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 not a de Polignac number, because 13145031 - 2¹⁰ = 13144007 is a prime.

It is a super-2 number, since 2×13145031² = 345583679981922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13144995 and 13145013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13145021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15601 + ... + 16421.

It is an arithmetic number, because the mean of its divisors is an integer number (1220670).

Almost surely, 2^13145031 is an apocalyptic number.

13145031 is a deficient number, since it is larger than the sum of its proper divisors (6385689).

13145031 is an equidigital number, since it uses as much as digits as its factorization.

13145031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423 (or 1417 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 13145031 is about 3625.6076732046. The cubic root of 13145031 is about 236.0046381833.

Adding to 13145031 its reverse (13054131), we get a palindrome (26199162).

The spelling of 13145031 in words is "thirteen million, one hundred forty-five thousand, thirty-one".