133680373 has 2 divisors, whose sum is σ = 133680374. Its totient is φ = 133680372.

The previous prime is 133680311. The next prime is 133680383. The reversal of 133680373 is 373086331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133679844 + 529 = 11562^2 + 23^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133680373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133680383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66840186 + 66840187.

It is an arithmetic number, because the mean of its divisors is an integer number (66840187).

Almost surely, 2^133680373 is an apocalyptic number.

It is an amenable number.

133680373 is a deficient number, since it is larger than the sum of its proper divisors (1).

133680373 is an equidigital number, since it uses as much as digits as its factorization.

133680373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 133680373 is about 11562.0228766423. The cubic root of 133680373 is about 511.3158038856.

The spelling of 133680373 in words is "one hundred thirty-three million, six hundred eighty thousand, three hundred seventy-three".