1231331123022 has 128 divisors (see below), whose sum is σ = 3307654103040. Its totient is φ = 295122234240.

The previous prime is 1231331123003. The next prime is 1231331123041. The reversal of 1231331123022 is 2203211331321.

It is an interprime number because it is at equal distance from previous prime (1231331123003) and next prime (1231331123041).

It is a junction number, because it is equal to n+sod(n) for n = 1231331122983 and 1231331123001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18122229 + ... + 18190047.

It is an arithmetic number, because the mean of its divisors is an integer number (25841047680).

Almost surely, 2^{1231331123022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231331123022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1653827051520).

1231331123022 is an abundant number, since it is smaller than the sum of its proper divisors (2076322980018).

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

1231331123022 is a wasteful number, since it uses less digits than its factorization.

1231331123022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70878.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1231331123022 its reverse (2203211331321), we get a palindrome (3434542454343).

The spelling of 1231331123022 in words is "one trillion, two hundred thirty-one billion, three hundred thirty-one million, one hundred twenty-three thousand, twenty-two".