123311440277 has 2 divisors, whose sum is σ = 123311440278. Its totient is φ = 123311440276.

The previous prime is 123311440271. The next prime is 123311440283. The reversal of 123311440277 is 772044113321.

It is a balanced prime because it is at equal distance from previous prime (123311440271) and next prime (123311440283).

It can be written as a sum of positive squares in only one way, i.e., 121543574161 + 1767866116 = 348631^2 + 42046^2 .

It is a cyclic number.

It is not a de Polignac number, because 123311440277 - 2²² = 123307245973 is a prime.

It is a super-2 number, since 2×123311440277² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123311440271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61655720138 + 61655720139.

It is an arithmetic number, because the mean of its divisors is an integer number (61655720139).

Almost surely, 2^123311440277 is an apocalyptic number.

It is an amenable number.

123311440277 is a deficient number, since it is larger than the sum of its proper divisors (1).

123311440277 is an equidigital number, since it uses as much as digits as its factorization.

123311440277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 35.

Adding to 123311440277 its reverse (772044113321), we get a palindrome (895355553598).

The spelling of 123311440277 in words is "one hundred twenty-three billion, three hundred eleven million, four hundred forty thousand, two hundred seventy-seven".