133534612431 has 12 divisors (see below), whose sum is σ = 210418177320. Its totient is φ = 80930068080.

The previous prime is 133534612391. The next prime is 133534612457. The reversal of 133534612431 is 134216435331.

133534612431 is a `hidden beast` number, since 1 + 3 + 3 + 5 + 3 + 4 + 612 + 4 + 31 = 666.

It is not a de Polignac number, because 133534612431 - 2⁷ = 133534612303 is a prime.

It is a super-2 number, since 2×133534612431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133534612931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 674417136 + ... + 674417333.

It is an arithmetic number, because the mean of its divisors is an integer number (17534848110).

Almost surely, 2^133534612431 is an apocalyptic number.

133534612431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133534612431 is a deficient number, since it is larger than the sum of its proper divisors (76883564889).

133534612431 is a wasteful number, since it uses less digits than its factorization.

133534612431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348834486 (or 1348834483 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The spelling of 133534612431 in words is "one hundred thirty-three billion, five hundred thirty-four million, six hundred twelve thousand, four hundred thirty-one".