133131822 has 16 divisors (see below), whose sum is σ = 280277760. Its totient is φ = 42041592.

The previous prime is 133131799. The next prime is 133131833. The reversal of 133131822 is 228131331.

It is a junction number, because it is equal to n+sod(n) for n = 133131792 and 133131801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583798 + ... + 584025.

It is an arithmetic number, because the mean of its divisors is an integer number (17517360).

Almost surely, 2^133131822 is an apocalyptic number.

133131822 is an abundant number, since it is smaller than the sum of its proper divisors (147145938).

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

133131822 is a wasteful number, since it uses less digits than its factorization.

133131822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167847.

The product of its digits is 864, while the sum is 24.

The square root of 133131822 is about 11538.2763877453. The cubic root of 133131822 is about 510.6154584385.

It can be divided in two parts, 1331 and 31822, that added together give a triangular number (33153 = T₂₅₇).

The spelling of 133131822 in words is "one hundred thirty-three million, one hundred thirty-one thousand, eight hundred twenty-two".