133225131 has 32 divisors (see below), whose sum is σ = 210147840. Its totient is φ = 74283264.

The previous prime is 133225111. The next prime is 133225153. The reversal of 133225131 is 131522331.

It is not a de Polignac number, because 133225131 - 2¹⁸ = 132962987 is a prime.

It is a super-2 number, since 2×133225131² = 35497871059934322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133225098 and 133225107.

It is not an unprimeable number, because it can be changed into a prime (133225111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13135 + ... + 20951.

It is an arithmetic number, because the mean of its divisors is an integer number (6567120).

Almost surely, 2^133225131 is an apocalyptic number.

133225131 is a deficient number, since it is larger than the sum of its proper divisors (76922709).

133225131 is a wasteful number, since it uses less digits than its factorization.

133225131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7875.

The product of its digits is 540, while the sum is 21.

The square root of 133225131 is about 11542.3191343854. The cubic root of 133225131 is about 510.7347234155.

Adding to 133225131 its reverse (131522331), we get a palindrome (264747462).

The spelling of 133225131 in words is "one hundred thirty-three million, two hundred twenty-five thousand, one hundred thirty-one".