133031461 has 4 divisors (see below), whose sum is σ = 133522624. Its totient is φ = 132540300.

The previous prime is 133031441. The next prime is 133031473. The reversal of 133031461 is 164130331.

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: 164130331 = 3547 ⋅46273.

It is a cyclic number.

It is not a de Polignac number, because 133031461 - 2¹⁷ = 132900389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133031441) 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, 245175 + ... + 245716.

It is an arithmetic number, because the mean of its divisors is an integer number (33380656).

Almost surely, 2^133031461 is an apocalyptic number.

It is an amenable number.

133031461 is a deficient number, since it is larger than the sum of its proper divisors (491163).

133031461 is an equidigital number, since it uses as much as digits as its factorization.

133031461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491162.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 133031461 is about 11533.9265213543. The cubic root of 133031461 is about 510.4871175710.

Adding to 133031461 its reverse (164130331), we get a palindrome (297161792).

The spelling of 133031461 in words is "one hundred thirty-three million, thirty-one thousand, four hundred sixty-one".