133123211126631 has 24 divisors (see below), whose sum is σ = 209792614711680. Its totient is φ = 80672000835600.

The previous prime is 133123211126629. The next prime is 133123211126669. The reversal of 133123211126631 is 136621112321331.

133123211126631 is a `hidden beast` number, since 1 + 3 + 3 + 1 + 2 + 3 + 2 + 1 + 1 + 12 + 6 + 631 = 666.

It is not a de Polignac number, because 133123211126631 - 2¹ = 133123211126629 is a prime.

It is a super-2 number, since 2×133123211126631² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133123211128631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71857225 + ... + 73686546.

It is an arithmetic number, because the mean of its divisors is an integer number (8741358946320).

Almost surely, 2^{133123211126631} is an apocalyptic number.

133123211126631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133123211126631 is a deficient number, since it is larger than the sum of its proper divisors (76669403585049).

133123211126631 is a wasteful number, since it uses less digits than its factorization.

133123211126631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145553027 (or 145553024 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

Adding to 133123211126631 its reverse (136621112321331), we get a palindrome (269744323447962).

The spelling of 133123211126631 in words is "one hundred thirty-three trillion, one hundred twenty-three billion, two hundred eleven million, one hundred twenty-six thousand, six hundred thirty-one".