133032401 has 4 divisors (see below), whose sum is σ = 133320192. Its totient is φ = 132744612.

The previous prime is 133032379. The next prime is 133032407. The reversal of 133032401 is 104230331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104230331 = 241 ⋅432491.

It is a cyclic number.

It is not a de Polignac number, because 133032401 - 2⁶ = 133032337 is a prime.

It is a super-3 number, since 3×133032401³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133032401.

It is not an unprimeable number, because it can be changed into a prime (133032407) 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, 143201 + ... + 144126.

It is an arithmetic number, because the mean of its divisors is an integer number (33330048).

Almost surely, 2^133032401 is an apocalyptic number.

It is an amenable number.

133032401 is a deficient number, since it is larger than the sum of its proper divisors (287791).

133032401 is an equidigital number, since it uses as much as digits as its factorization.

133032401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287790.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 133032401 is about 11533.9672706316. The cubic root of 133032401 is about 510.4883199351.

Adding to 133032401 its reverse (104230331), we get a palindrome (237262732).

The spelling of 133032401 in words is "one hundred thirty-three million, thirty-two thousand, four hundred one".