133112643 has 16 divisors (see below), whose sum is σ = 182881536. Its totient is φ = 86058720.

The previous prime is 133112633. The next prime is 133112657. The reversal of 133112643 is 346211331.

It is a happy number.

It is not a de Polignac number, because 133112643 - 2¹³ = 133104451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133112633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34930 + ... + 38552.

It is an arithmetic number, because the mean of its divisors is an integer number (11430096).

Almost surely, 2^133112643 is an apocalyptic number.

133112643 is a deficient number, since it is larger than the sum of its proper divisors (49768893).

133112643 is a wasteful number, since it uses less digits than its factorization.

133112643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3994.

The product of its digits is 1296, while the sum is 24.

The square root of 133112643 is about 11537.4452544747. The cubic root of 133112643 is about 510.5909374687.

Adding to 133112643 its reverse (346211331), we get a palindrome (479323974).

The spelling of 133112643 in words is "one hundred thirty-three million, one hundred twelve thousand, six hundred forty-three".