133137507 has 8 divisors (see below), whose sum is σ = 182314576. Its totient is φ = 86359392.

The previous prime is 133137479. The next prime is 133137517. The reversal of 133137507 is 705731331.

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

It is not a de Polignac number, because 133137507 - 2¹¹ = 133135459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133137517) 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, 599608 + ... + 599829.

It is an arithmetic number, because the mean of its divisors is an integer number (22789322).

Almost surely, 2^133137507 is an apocalyptic number.

133137507 is a deficient number, since it is larger than the sum of its proper divisors (49177069).

133137507 is a wasteful number, since it uses less digits than its factorization.

133137507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199477.

The product of its (nonzero) digits is 6615, while the sum is 30.

The square root of 133137507 is about 11538.5227390685. The cubic root of 133137507 is about 510.6227264418.

Adding to 133137507 its reverse (705731331), we get a palindrome (838868838).

The spelling of 133137507 in words is "one hundred thirty-three million, one hundred thirty-seven thousand, five hundred seven".