13131016 has 8 divisors (see below), whose sum is σ = 24620670. Its totient is φ = 6565504.

The previous prime is 13130989. The next prime is 13131017. The reversal of 13131016 is 61013131.

It can be written as a sum of positive squares in only one way, i.e., 8678916 + 4452100 = 2946^2 + 2110^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13131017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820681 + ... + 820696.

Almost surely, 2^13131016 is an apocalyptic number.

It is an amenable number.

13131016 is a deficient number, since it is larger than the sum of its proper divisors (11489654).

13131016 is a wasteful number, since it uses less digits than its factorization.

13131016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641383 (or 1641379 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 13131016 is about 3623.6743783072. The cubic root of 13131016 is about 235.9207336974.

Adding to 13131016 its reverse (61013131), we get a palindrome (74144147).

The spelling of 13131016 in words is "thirteen million, one hundred thirty-one thousand, sixteen".