133000531 has 2 divisors, whose sum is σ = 133000532. Its totient is φ = 133000530.

The previous prime is 133000523. The next prime is 133000603. The reversal of 133000531 is 135000331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133000531 - 2³ = 133000523 is a prime.

It is a super-2 number, since 2×133000531² = 35378282492563922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133000831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66500265 + 66500266.

It is an arithmetic number, because the mean of its divisors is an integer number (66500266).

Almost surely, 2^133000531 is an apocalyptic number.

133000531 is a deficient number, since it is larger than the sum of its proper divisors (1).

133000531 is an equidigital number, since it uses as much as digits as its factorization.

133000531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135, while the sum is 16.

The square root of 133000531 is about 11532.5856164175. The cubic root of 133000531 is about 510.4475515158.

Adding to 133000531 its reverse (135000331), we get a palindrome (268000862).

The spelling of 133000531 in words is "one hundred thirty-three million, five hundred thirty-one", and thus it is an aban number.