133231606740 has 36 divisors (see below), whose sum is σ = 404135874324. Its totient is φ = 35528428416.

The previous prime is 133231606727. The next prime is 133231606747. The reversal of 133231606740 is 47606132331.

133231606740 is a `hidden beast` number, since 1 + 3 + 3 + 2 + 3 + 1 + 606 + 7 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 100339431696 + 32892175044 = 316764^2 + 181362^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×133231606740² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 133231606695 and 133231606704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133231606747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 370087617 + ... + 370087976.

It is an arithmetic number, because the mean of its divisors is an integer number (11225996509).

Almost surely, 2^133231606740 is an apocalyptic number.

133231606740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133231606740 is an abundant number, since it is smaller than the sum of its proper divisors (270904267584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133231606740 is a wasteful number, since it uses less digits than its factorization.

133231606740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740175608 (or 740175603 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The spelling of 133231606740 in words is "one hundred thirty-three billion, two hundred thirty-one million, six hundred six thousand, seven hundred forty".