13631145 has 16 divisors (see below), whose sum is σ = 23792832. Its totient is φ = 6608960.

The previous prime is 13631143. The next prime is 13631153. The reversal of 13631145 is 54113631.

It is not a de Polignac number, because 13631145 - 2¹ = 13631143 is a prime.

It is a super-2 number, since 2×13631145² = 371616228022050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13631143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41142 + ... + 41471.

It is an arithmetic number, because the mean of its divisors is an integer number (1487052).

Almost surely, 2^13631145 is an apocalyptic number.

13631145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13631145 is a deficient number, since it is larger than the sum of its proper divisors (10161687).

13631145 is a wasteful number, since it uses less digits than its factorization.

13631145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82632.

The product of its digits is 1080, while the sum is 24.

The square root of 13631145 is about 3692.0380550585. The cubic root of 13631145 is about 238.8787104210.

Adding to 13631145 its reverse (54113631), we get a palindrome (67744776).

The spelling of 13631145 in words is "thirteen million, six hundred thirty-one thousand, one hundred forty-five".