133031222 has 16 divisors (see below), whose sum is σ = 211727520. Its totient is φ = 62471808.

The previous prime is 133031221. The next prime is 133031257. The reversal of 133031222 is 222130331.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 133031222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133031221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13463 + ... + 21149.

It is an arithmetic number, because the mean of its divisors is an integer number (13232970).

Almost surely, 2^133031222 is an apocalyptic number.

133031222 is a deficient number, since it is larger than the sum of its proper divisors (78696298).

133031222 is a wasteful number, since it uses less digits than its factorization.

133031222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8215.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 133031222 is about 11533.9161606108. The cubic root of 133031222 is about 510.4868118626.

Adding to 133031222 its reverse (222130331), we get a palindrome (355161553).

The spelling of 133031222 in words is "one hundred thirty-three million, thirty-one thousand, two hundred twenty-two".