1231310122 has 12 divisors (see below), whose sum is σ = 2148510690. Its totient is φ = 527704296.

The previous prime is 1231310081. The next prime is 1231310141. The reversal of 1231310122 is 2210131321.

It can be written as a sum of positive squares in only one way, i.e., 989165401 + 242144721 = 31451^2 + 15561^2 .

It is a super-2 number, since 2×1231310122² = 3032249233079309768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231310096 and 1231310105.

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 5 ways as a sum of consecutive naturals, for example, 6282097 + ... + 6282292.

Almost surely, 2^1231310122 is an apocalyptic number.

1231310122 is a deficient number, since it is larger than the sum of its proper divisors (917200568).

1231310122 is a wasteful number, since it uses less digits than its factorization.

1231310122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12564405 (or 12564398 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1231310122 is about 35090.0288116154. The cubic root of 1231310122 is about 1071.8215463001.

Adding to 1231310122 its reverse (2210131321), we get a palindrome (3441441443).

The spelling of 1231310122 in words is "one billion, two hundred thirty-one million, three hundred ten thousand, one hundred twenty-two".