31133122 has 8 divisors (see below), whose sum is σ = 48730176. Its totient is φ = 14889732.

The previous prime is 31133087. The next prime is 31133131. The reversal of 31133122 is 22133113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31133096 and 31133105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338358 + ... + 338449.

It is an arithmetic number, because the mean of its divisors is an integer number (6091272).

Almost surely, 2^31133122 is an apocalyptic number.

31133122 is a deficient number, since it is larger than the sum of its proper divisors (17597054).

31133122 is a wasteful number, since it uses less digits than its factorization.

31133122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676832.

The product of its digits is 108, while the sum is 16.

The square root of 31133122 is about 5579.7062646702. The cubic root of 31133122 is about 314.5870864202.

Adding to 31133122 its reverse (22133113), we get a palindrome (53266235).

Subtracting from 31133122 its reverse (22133113), we obtain a palindrome (9000009).

It can be divided in two parts, 311 and 33122, that added together give a palindrome (33433).

The spelling of 31133122 in words is "thirty-one million, one hundred thirty-three thousand, one hundred twenty-two".