133213000531 has 4 divisors (see below), whose sum is σ = 143460154432. Its totient is φ = 122965846632.

The previous prime is 133213000517. The next prime is 133213000561. The reversal of 133213000531 is 135000312331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133213000531 - 2¹⁷ = 133212869459 is a prime.

It is a super-2 number, since 2×133213000531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133213000561) 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 3 ways as a sum of consecutive naturals, for example, 5123576931 + ... + 5123576956.

It is an arithmetic number, because the mean of its divisors is an integer number (35865038608).

Almost surely, 2^133213000531 is an apocalyptic number.

133213000531 is a deficient number, since it is larger than the sum of its proper divisors (10247153901).

133213000531 is a wasteful number, since it uses less digits than its factorization.

133213000531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10247153900.

The product of its (nonzero) digits is 810, while the sum is 22.

Adding to 133213000531 its reverse (135000312331), we get a palindrome (268213312862).

The spelling of 133213000531 in words is "one hundred thirty-three billion, two hundred thirteen million, five hundred thirty-one", and thus it is an aban number.