133361273554631 has 4 divisors (see below), whose sum is σ = 135877523999112. Its totient is φ = 130845023110152.

The previous prime is 133361273554577. The next prime is 133361273554633. The reversal of 133361273554631 is 136455372163331.

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 133361273554631 - 2⁶ = 133361273554567 is a prime.

It is a super-2 number, since 2×133361273554631² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53), and also a Moran number because the ratio is a prime number: 2516250444427 = 133361273554631 / (1 + 3 + 3 + 3 + 6 + 1 + 2 + 7 + 3 + 5 + 5 + 4 + 6 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133361273554633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1258125222161 + ... + 1258125222266.

It is an arithmetic number, because the mean of its divisors is an integer number (33969380999778).

Almost surely, 2^{133361273554631} is an apocalyptic number.

133361273554631 is a deficient number, since it is larger than the sum of its proper divisors (2516250444481).

133361273554631 is an equidigital number, since it uses as much as digits as its factorization.

133361273554631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516250444480.

The product of its digits is 12247200, while the sum is 53.

The spelling of 133361273554631 in words is "one hundred thirty-three trillion, three hundred sixty-one billion, two hundred seventy-three million, five hundred fifty-four thousand, six hundred thirty-one".