2231320123 has 2 divisors, whose sum is σ = 2231320124. Its totient is φ = 2231320122.

The previous prime is 2231320109. The next prime is 2231320151. The reversal of 2231320123 is 3210231322.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2231320123 is a prime.

It is a super-3 number, since 3×2231320123³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2231320123.

It is not a weakly prime, because it can be changed into another prime (2231320103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115660061 + 1115660062.

It is an arithmetic number, because the mean of its divisors is an integer number (1115660062).

Almost surely, 2^2231320123 is an apocalyptic number.

2231320123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231320123 is an equidigital number, since it uses as much as digits as its factorization.

2231320123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2231320123 is about 47236.8513239399. The cubic root of 2231320123 is about 1306.7343094654.

Adding to 2231320123 its reverse (3210231322), we get a palindrome (5441551445).

It can be divided in two parts, 22313 and 20123, that added together give a square (42436 = 206²).

The spelling of 2231320123 in words is "two billion, two hundred thirty-one million, three hundred twenty thousand, one hundred twenty-three".