133303413 has 4 divisors (see below), whose sum is σ = 177737888. Its totient is φ = 88868940.

The previous prime is 133303381. The next prime is 133303439. The reversal of 133303413 is 314303331.

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: 314303331 = 3 ⋅104767777.

It is not a de Polignac number, because 133303413 - 2⁵ = 133303381 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 133303413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133303493) 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, 22217233 + ... + 22217238.

It is an arithmetic number, because the mean of its divisors is an integer number (44434472).

Almost surely, 2^133303413 is an apocalyptic number.

It is an amenable number.

133303413 is a deficient number, since it is larger than the sum of its proper divisors (44434475).

133303413 is an equidigital number, since it uses as much as digits as its factorization.

133303413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44434474.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 133303413 is about 11545.7097226632. The cubic root of 133303413 is about 510.8347383475.

Adding to 133303413 its reverse (314303331), we get a palindrome (447606744).

The spelling of 133303413 in words is "one hundred thirty-three million, three hundred three thousand, four hundred thirteen".