133215433 has 12 divisors (see below), whose sum is σ = 145041408. Its totient is φ = 122294640.

The previous prime is 133215431. The next prime is 133215461. The reversal of 133215433 is 334512331.

It is not a de Polignac number, because 133215433 - 2¹ = 133215431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133215398 and 133215407.

It is not an unprimeable number, because it can be changed into a prime (133215431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30216 + ... + 34342.

It is an arithmetic number, because the mean of its divisors is an integer number (12086784).

Almost surely, 2^133215433 is an apocalyptic number.

133215433 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

133215433 is a deficient number, since it is larger than the sum of its proper divisors (11825975).

133215433 is a wasteful number, since it uses less digits than its factorization.

133215433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4344 (or 4331 counting only the distinct ones).

The product of its digits is 3240, while the sum is 25.

The square root of 133215433 is about 11541.8990205252. The cubic root of 133215433 is about 510.7223302944.

Adding to 133215433 its reverse (334512331), we get a palindrome (467727764).

The spelling of 133215433 in words is "one hundred thirty-three million, two hundred fifteen thousand, four hundred thirty-three".