133283397 has 8 divisors (see below), whose sum is σ = 191381344. Its totient is φ = 82020528.

The previous prime is 133283357. The next prime is 133283407. The reversal of 133283397 is 793382331.

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

It is not a de Polignac number, because 133283397 - 2¹¹ = 133281349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 3417523 = 133283397 / (1 + 3 + 3 + 2 + 8 + 3 + 3 + 9 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133283357) 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 7 ways as a sum of consecutive naturals, for example, 1708723 + ... + 1708800.

It is an arithmetic number, because the mean of its divisors is an integer number (23922668).

Almost surely, 2^133283397 is an apocalyptic number.

It is an amenable number.

133283397 is a deficient number, since it is larger than the sum of its proper divisors (58097947).

133283397 is a wasteful number, since it uses less digits than its factorization.

133283397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3417539.

The product of its digits is 81648, while the sum is 39.

The square root of 133283397 is about 11544.8428746345. The cubic root of 133283397 is about 510.8091691599.

The spelling of 133283397 in words is "one hundred thirty-three million, two hundred eighty-three thousand, three hundred ninety-seven".