133320401 has 4 divisors (see below), whose sum is σ = 133448304. Its totient is φ = 133192500.

The previous prime is 133320371. The next prime is 133320427. The reversal of 133320401 is 104023331.

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: 104023331 = 4621 ⋅22511.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133320401 is a prime.

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 133320401.

It is not an unprimeable number, because it can be changed into a prime (133320301) 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, 62375 + ... + 64476.

It is an arithmetic number, because the mean of its divisors is an integer number (33362076).

Almost surely, 2^133320401 is an apocalyptic number.

It is an amenable number.

133320401 is a deficient number, since it is larger than the sum of its proper divisors (127903).

133320401 is a wasteful number, since it uses less digits than its factorization.

133320401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127902.

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

The square root of 133320401 is about 11546.4453837534. The cubic root of 133320401 is about 510.8564374466.

Adding to 133320401 its reverse (104023331), we get a palindrome (237343732).

The spelling of 133320401 in words is "one hundred thirty-three million, three hundred twenty thousand, four hundred one".