133247087 has 4 divisors (see below), whose sum is σ = 133579776. Its totient is φ = 132914400.

The previous prime is 133247069. The next prime is 133247111. The reversal of 133247087 is 780742331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 780742331 = 179 ⋅4361689.

It is a cyclic number.

It is not a de Polignac number, because 133247087 - 2¹⁴ = 133230703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133247687) 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, 165743 + ... + 166544.

It is an arithmetic number, because the mean of its divisors is an integer number (33394944).

Almost surely, 2^133247087 is an apocalyptic number.

133247087 is a deficient number, since it is larger than the sum of its proper divisors (332689).

133247087 is an equidigital number, since it uses as much as digits as its factorization.

133247087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332688.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 133247087 is about 11543.2702038894. The cubic root of 133247087 is about 510.7627788720.

The spelling of 133247087 in words is "one hundred thirty-three million, two hundred forty-seven thousand, eighty-seven".