133391307 has 8 divisors (see below), whose sum is σ = 203262976. Its totient is φ = 76223592.

The previous prime is 133391303. The next prime is 133391317. The reversal of 133391307 is 703193331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133391307 - 2² = 133391303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133391303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3175963 + ... + 3176004.

It is an arithmetic number, because the mean of its divisors is an integer number (25407872).

Almost surely, 2^133391307 is an apocalyptic number.

133391307 is a deficient number, since it is larger than the sum of its proper divisors (69871669).

133391307 is an equidigital number, since it uses as much as digits as its factorization.

133391307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6351977.

The product of its (nonzero) digits is 5103, while the sum is 30.

The square root of 133391307 is about 11549.5154443812. The cubic root of 133391307 is about 510.9469871463.

The spelling of 133391307 in words is "one hundred thirty-three million, three hundred ninety-one thousand, three hundred seven".