133146361 has 4 divisors (see below), whose sum is σ = 136242832. Its totient is φ = 130049892.

The previous prime is 133146331. The next prime is 133146373. The reversal of 133146361 is 163641331.

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 133146361 - 2⁹ = 133145849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133146301) 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, 1548171 + ... + 1548256.

It is an arithmetic number, because the mean of its divisors is an integer number (34060708).

Almost surely, 2^133146361 is an apocalyptic number.

It is an amenable number.

133146361 is a deficient number, since it is larger than the sum of its proper divisors (3096471).

133146361 is an equidigital number, since it uses as much as digits as its factorization.

133146361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3096470.

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

The square root of 133146361 is about 11538.9064039882. The cubic root of 133146361 is about 510.6340454495.

Adding to 133146361 its reverse (163641331), we get a palindrome (296787692).

The spelling of 133146361 in words is "one hundred thirty-three million, one hundred forty-six thousand, three hundred sixty-one".