133131322 has 4 divisors (see below), whose sum is σ = 199696986. Its totient is φ = 66565660.

The previous prime is 133131293. The next prime is 133131343. The reversal of 133131322 is 223131331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 223131331 = 97 ⋅2300323.

It can be written as a sum of positive squares in only one way, i.e., 103002201 + 30129121 = 10149^2 + 5489^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 133131322.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33282829 + ... + 33282832.

Almost surely, 2^133131322 is an apocalyptic number.

133131322 is a deficient number, since it is larger than the sum of its proper divisors (66565664).

133131322 is an equidigital number, since it uses as much as digits as its factorization.

133131322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66565663.

The product of its digits is 324, while the sum is 19.

The square root of 133131322 is about 11538.2547207106. The cubic root of 133131322 is about 510.6148192023.

Adding to 133131322 its reverse (223131331), we get a palindrome (356262653).

Subtracting 133131322 from its reverse (223131331), we obtain a palindrome (90000009).

The spelling of 133131322 in words is "one hundred thirty-three million, one hundred thirty-one thousand, three hundred twenty-two".