131616826 has 16 divisors (see below), whose sum is σ = 219957120. Its totient is φ = 58552480.

The previous prime is 131616817. The next prime is 131616829. The reversal of 131616826 is 628616131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131616791 and 131616800.

It is not an unprimeable number, because it can be changed into a prime (131616829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62611 + ... + 64678.

It is an arithmetic number, because the mean of its divisors is an integer number (13747320).

Almost surely, 2^131616826 is an apocalyptic number.

131616826 is a deficient number, since it is larger than the sum of its proper divisors (88340294).

131616826 is a wasteful number, since it uses less digits than its factorization.

131616826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127349.

The product of its digits is 10368, while the sum is 34.

The square root of 131616826 is about 11472.4376659889. The cubic root of 131616826 is about 508.6711864099.

The spelling of 131616826 in words is "one hundred thirty-one million, six hundred sixteen thousand, eight hundred twenty-six".