31122122 has 8 divisors (see below), whose sum is σ = 46731972. Its totient is φ = 15544800.

The previous prime is 31122101. The next prime is 31122173. The reversal of 31122122 is 22122113.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29931841 + 1190281 = 5471^2 + 1091^2 .

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

It is a super-3 number, since 3×31122122³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31122097 and 31122106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5579 + ... + 9662.

Almost surely, 2^31122122 is an apocalyptic number.

31122122 is a deficient number, since it is larger than the sum of its proper divisors (15609850).

31122122 is a wasteful number, since it uses less digits than its factorization.

31122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16264.

The product of its digits is 48, while the sum is 14.

The square root of 31122122 is about 5578.7204626151. The cubic root of 31122122 is about 314.5500319334.

Adding to 31122122 its reverse (22122113), we get a palindrome (53244235).

Subtracting from 31122122 its reverse (22122113), we obtain a palindrome (9000009).

The spelling of 31122122 in words is "thirty-one million, one hundred twenty-two thousand, one hundred twenty-two".