13011345 has 12 divisors (see below), whose sum is σ = 22553076. Its totient is φ = 6939360.

The previous prime is 13011337. The next prime is 13011347. The reversal of 13011345 is 54311031.

It can be written as a sum of positive squares in 2 ways, for example, as 9290304 + 3721041 = 3048^2 + 1929^2 .

It is not a de Polignac number, because 13011345 - 2³ = 13011337 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13011347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144526 + ... + 144615.

It is an arithmetic number, because the mean of its divisors is an integer number (1879423).

Almost surely, 2^13011345 is an apocalyptic number.

13011345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13011345 is a deficient number, since it is larger than the sum of its proper divisors (9541731).

13011345 is a wasteful number, since it uses less digits than its factorization.

13011345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289152 (or 289149 counting only the distinct ones).

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

The square root of 13011345 is about 3607.1242008004. The cubic root of 13011345 is about 235.2018486076.

Adding to 13011345 its reverse (54311031), we get a palindrome (67322376).

The spelling of 13011345 in words is "thirteen million, eleven thousand, three hundred forty-five".