133131016 has 16 divisors (see below), whose sum is σ = 249761340. Its totient is φ = 66528000.

The previous prime is 133131007. The next prime is 133131017. The reversal of 133131016 is 610131331.

It can be written as a sum of positive squares in 2 ways, for example, as 132020100 + 1110916 = 11490^2 + 1054^2 .

It is a junction number, because it is equal to n+sod(n) for n = 133130984 and 133131002.

It is not an unprimeable number, because it can be changed into a prime (133131017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15516 + ... + 22516.

Almost surely, 2^133131016 is an apocalyptic number.

It is an amenable number.

133131016 is a deficient number, since it is larger than the sum of its proper divisors (116630324).

133131016 is a wasteful number, since it uses less digits than its factorization.

133131016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9384 (or 9380 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 133131016 is about 11538.2414604653. The cubic root of 133131016 is about 510.6144279889.

Adding to 133131016 its reverse (610131331), we get a palindrome (743262347).

The spelling of 133131016 in words is "one hundred thirty-three million, one hundred thirty-one thousand, sixteen".