131320016 has 10 divisors (see below), whose sum is σ = 254432562. Its totient is φ = 65660000.

The previous prime is 131320009. The next prime is 131320031. The reversal of 131320016 is 610023131.

It can be written as a sum of positive squares in only one way, i.e., 92929600 + 38390416 = 9640^2 + 6196^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131319976 and 131320003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4103735 + ... + 4103766.

Almost surely, 2^131320016 is an apocalyptic number.

131320016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

131320016 is a deficient number, since it is larger than the sum of its proper divisors (123112546).

131320016 is an equidigital number, since it uses as much as digits as its factorization.

131320016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8207509 (or 8207503 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 131320016 is about 11459.4945787325. The cubic root of 131320016 is about 508.2885293367.

Adding to 131320016 its reverse (610023131), we get a palindrome (741343147).

The spelling of 131320016 in words is "one hundred thirty-one million, three hundred twenty thousand, sixteen".