13131146 has 16 divisors (see below), whose sum is σ = 22576320. Its totient is φ = 5611200.

The previous prime is 13131133. The next prime is 13131169. The reversal of 13131146 is 64113131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4445 + ... + 6783.

It is an arithmetic number, because the mean of its divisors is an integer number (1411020).

Almost surely, 2^13131146 is an apocalyptic number.

13131146 is a deficient number, since it is larger than the sum of its proper divisors (9445174).

13131146 is a wasteful number, since it uses less digits than its factorization.

13131146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749.

The product of its digits is 216, while the sum is 20.

The square root of 13131146 is about 3623.6923158569. The cubic root of 13131146 is about 235.9215122509.

Adding to 13131146 its reverse (64113131), we get a palindrome (77244277).

The spelling of 13131146 in words is "thirteen million, one hundred thirty-one thousand, one hundred forty-six".