133450313 has 4 divisors (see below), whose sum is σ = 133667220. Its totient is φ = 133233408.

The previous prime is 133450309. The next prime is 133450321. The reversal of 133450313 is 313054331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313054331 = 13441 ⋅23291.

It can be written as a sum of positive squares in 2 ways, for example, as 75811849 + 57638464 = 8707^2 + 7592^2 .

It is a cyclic number.

It is not a de Polignac number, because 133450313 - 2² = 133450309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133450333) 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, 107528 + ... + 108761.

It is an arithmetic number, because the mean of its divisors is an integer number (33416805).

Almost surely, 2^133450313 is an apocalyptic number.

It is an amenable number.

133450313 is a deficient number, since it is larger than the sum of its proper divisors (216907).

133450313 is an equidigital number, since it uses as much as digits as its factorization.

133450313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216906.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 133450313 is about 11552.0696414106. The cubic root of 133450313 is about 511.0223156271.

The spelling of 133450313 in words is "one hundred thirty-three million, four hundred fifty thousand, three hundred thirteen".