1230123277 has 2 divisors, whose sum is σ = 1230123278. Its totient is φ = 1230123276.

The previous prime is 1230123227. The next prime is 1230123313. The reversal of 1230123277 is 7723210321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1222621156 + 7502121 = 34966^2 + 2739^2 .

It is an emirp because it is prime and its reverse (7723210321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1230123277 - 2¹¹ = 1230121229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230123227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615061638 + 615061639.

It is an arithmetic number, because the mean of its divisors is an integer number (615061639).

Almost surely, 2^1230123277 is an apocalyptic number.

It is an amenable number.

1230123277 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230123277 is an equidigital number, since it uses as much as digits as its factorization.

1230123277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 1230123277 is about 35073.1133063491. The cubic root of 1230123277 is about 1071.4770636347.

Adding to 1230123277 its reverse (7723210321), we get a palindrome (8953333598).

The spelling of 1230123277 in words is "one billion, two hundred thirty million, one hundred twenty-three thousand, two hundred seventy-seven".