133461361 has 4 divisors (see below), whose sum is σ = 145594224. Its totient is φ = 121328500.

The previous prime is 133461353. The next prime is 133461389. The reversal of 133461361 is 163164331.

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: 163164331 = 11 ⋅14833121.

It is a cyclic number.

It is not a de Polignac number, because 133461361 - 2³ = 133461353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133461061) 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 3 ways as a sum of consecutive naturals, for example, 6066415 + ... + 6066436.

It is an arithmetic number, because the mean of its divisors is an integer number (36398556).

Almost surely, 2^133461361 is an apocalyptic number.

133461361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133461361 is a deficient number, since it is larger than the sum of its proper divisors (12132863).

133461361 is a wasteful number, since it uses less digits than its factorization.

133461361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12132862.

The product of its digits is 3888, while the sum is 28.

The square root of 133461361 is about 11552.5478142270. The cubic root of 133461361 is about 511.0364173019.

The spelling of 133461361 in words is "one hundred thirty-three million, four hundred sixty-one thousand, three hundred sixty-one".