13031145 has 16 divisors (see below), whose sum is σ = 23166720. Its totient is φ = 6949872.

The previous prime is 13031101. The next prime is 13031159. The reversal of 13031145 is 54113031.

It is not a de Polignac number, because 13031145 - 2¹⁷ = 12900073 is a prime.

It is a super-2 number, since 2×13031145² = 339621480022050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48129 + ... + 48398.

It is an arithmetic number, because the mean of its divisors is an integer number (1447920).

Almost surely, 2^13031145 is an apocalyptic number.

13031145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13031145 is a deficient number, since it is larger than the sum of its proper divisors (10135575).

13031145 is an equidigital number, since it uses as much as digits as its factorization.

13031145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96541 (or 96535 counting only the distinct ones).

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

The square root of 13031145 is about 3609.8677261085. The cubic root of 13031145 is about 235.3210941926.

Adding to 13031145 its reverse (54113031), we get a palindrome (67144176).

The spelling of 13031145 in words is "thirteen million, thirty-one thousand, one hundred forty-five".