133501031 has 2 divisors, whose sum is σ = 133501032. Its totient is φ = 133501030.

The previous prime is 133500959. The next prime is 133501057. The reversal of 133501031 is 130105331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133501031 - 2¹⁰ = 133500007 is a prime.

It is a super-2 number, since 2×133501031² = 35645050556125922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133501061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66750515 + 66750516.

It is an arithmetic number, because the mean of its divisors is an integer number (66750516).

Almost surely, 2^133501031 is an apocalyptic number.

133501031 is a deficient number, since it is larger than the sum of its proper divisors (1).

133501031 is an equidigital number, since it uses as much as digits as its factorization.

133501031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 135, while the sum is 17.

The square root of 133501031 is about 11554.2646239386. The cubic root of 133501031 is about 511.0870457041.

Adding to 133501031 its reverse (130105331), we get a palindrome (263606362).

The spelling of 133501031 in words is "one hundred thirty-three million, five hundred one thousand, thirty-one".