123315332031077 has 2 divisors, whose sum is σ = 123315332031078. Its totient is φ = 123315332031076.

The previous prime is 123315332031043. The next prime is 123315332031193. The reversal of 123315332031077 is 770130233513321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103874234480641 + 19441097550436 = 10191871^2 + 4409206^2 .

It is an emirp because it is prime and its reverse (770130233513321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123315332031077 - 2¹⁶ = 123315331965541 is a prime.

It is a super-2 number, since 2×123315332031077² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123315332031277) by changing a digit.

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 as a sum of consecutive naturals, namely, 61657666015538 + 61657666015539.

It is an arithmetic number, because the mean of its divisors is an integer number (61657666015539).

Almost surely, 2^{123315332031077} is an apocalyptic number.

It is an amenable number.

123315332031077 is a deficient number, since it is larger than the sum of its proper divisors (1).

123315332031077 is an equidigital number, since it uses as much as digits as its factorization.

123315332031077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 238140, while the sum is 41.

Adding to 123315332031077 its reverse (770130233513321), we get a palindrome (893445565544398).

The spelling of 123315332031077 in words is "one hundred twenty-three trillion, three hundred fifteen billion, three hundred thirty-two million, thirty-one thousand, seventy-seven".