31223011122 has 12 divisors (see below), whose sum is σ = 67649857470. Its totient is φ = 10407670368.

The previous prime is 31223011111. The next prime is 31223011133. The reversal of 31223011122 is 22111032213.

31223011122 is a `hidden beast` number, since 312 + 230 + 1 + 1 + 122 = 666.

It is an interprime number because it is at equal distance from previous prime (31223011111) and next prime (31223011133).

It can be written as a sum of positive squares in only one way, i.e., 29862950481 + 1360060641 = 172809^2 + 36879^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1734611729 = 31223011122 / (3 + 1 + 2 + 2 + 3 + 0 + 1 + 1 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 31223011095 and 31223011104.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 867305847 + ... + 867305882.

Almost surely, 2^31223011122 is an apocalyptic number.

31223011122 is an abundant number, since it is smaller than the sum of its proper divisors (36426846348).

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

31223011122 is a wasteful number, since it uses less digits than its factorization.

31223011122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734611737 (or 1734611734 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 31223011122 its reverse (22111032213), we get a palindrome (53334043335).

The spelling of 31223011122 in words is "thirty-one billion, two hundred twenty-three million, eleven thousand, one hundred twenty-two".