133531826 has 4 divisors (see below), whose sum is σ = 200297742. Its totient is φ = 66765912.

The previous prime is 133531823. The next prime is 133531831. The reversal of 133531826 is 628135331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 102718225 + 30813601 = 10135^2 + 5551^2 .

It is a junction number, because it is equal to n+sod(n) for n = 133531792 and 133531801.

It is not an unprimeable number, because it can be changed into a prime (133531823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33382955 + ... + 33382958.

Almost surely, 2^133531826 is an apocalyptic number.

133531826 is a deficient number, since it is larger than the sum of its proper divisors (66765916).

133531826 is an equidigital number, since it uses as much as digits as its factorization.

133531826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66765915.

The product of its digits is 12960, while the sum is 32.

The square root of 133531826 is about 11555.5971719336. The cubic root of 133531826 is about 511.1263405705.

The spelling of 133531826 in words is "one hundred thirty-three million, five hundred thirty-one thousand, eight hundred twenty-six".