133106523 has 16 divisors (see below), whose sum is σ = 194592000. Its totient is φ = 80261280.

The previous prime is 133106483. The next prime is 133106551. The reversal of 133106523 is 325601331.

It is a happy number.

It is not a de Polignac number, because 133106523 - 2¹⁶ = 133040987 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133106493 and 133106502.

It is not an unprimeable number, because it can be changed into a prime (133106593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3568 + ... + 16701.

It is an arithmetic number, because the mean of its divisors is an integer number (12162000).

Almost surely, 2^133106523 is an apocalyptic number.

133106523 is a deficient number, since it is larger than the sum of its proper divisors (61485477).

133106523 is a wasteful number, since it uses less digits than its factorization.

133106523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20482.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 133106523 is about 11537.1800280658. The cubic root of 133106523 is about 510.5831123556.

Adding to 133106523 its reverse (325601331), we get a palindrome (458707854).

The spelling of 133106523 in words is "one hundred thirty-three million, one hundred six thousand, five hundred twenty-three".