2131022123 has 2 divisors, whose sum is σ = 2131022124. Its totient is φ = 2131022122.

The previous prime is 2131022099. The next prime is 2131022161. The reversal of 2131022123 is 3212201312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2131022123 - 2¹⁶ = 2130956587 is a prime.

It is not a weakly prime, because it can be changed into another prime (2131022183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065511061 + 1065511062.

It is an arithmetic number, because the mean of its divisors is an integer number (1065511062).

Almost surely, 2^2131022123 is an apocalyptic number.

2131022123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131022123 is an equidigital number, since it uses as much as digits as its factorization.

2131022123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2131022123 is about 46162.9951692912. The cubic root of 2131022123 is about 1286.8541262735.

Adding to 2131022123 its reverse (3212201312), we get a palindrome (5343223435).

The spelling of 2131022123 in words is "two billion, one hundred thirty-one million, twenty-two thousand, one hundred twenty-three".