133244401 has 4 divisors (see below), whose sum is σ = 136343152. Its totient is φ = 130145652.

The previous prime is 133244399. The next prime is 133244431. The reversal of 133244401 is 104442331.

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.

It is a cyclic number.

It is not a de Polignac number, because 133244401 - 2¹ = 133244399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133244431) 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, 1549311 + ... + 1549396.

It is an arithmetic number, because the mean of its divisors is an integer number (34085788).

Almost surely, 2^133244401 is an apocalyptic number.

It is an amenable number.

133244401 is a deficient number, since it is larger than the sum of its proper divisors (3098751).

133244401 is an equidigital number, since it uses as much as digits as its factorization.

133244401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3098750.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 133244401 is about 11543.1538584565. The cubic root of 133244401 is about 510.7593468569.

Adding to 133244401 its reverse (104442331), we get a palindrome (237686732).

The spelling of 133244401 in words is "one hundred thirty-three million, two hundred forty-four thousand, four hundred one".