123369114781 has 24 divisors (see below), whose sum is σ = 137499820920. Its totient is φ = 110592683520.

The previous prime is 123369114761. The next prime is 123369114797. The reversal of 123369114781 is 187411963321.

It can be written as a sum of positive squares in 4 ways, for example, as 26392926681 + 96976188100 = 162459^2 + 311410^2 .

It is not a de Polignac number, because 123369114781 - 2⁵ = 123369114749 is a prime.

It is a super-2 number, since 2×123369114781² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123369114721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4001481 + ... + 4032193.

It is an arithmetic number, because the mean of its divisors is an integer number (5729159205).

Almost surely, 2^123369114781 is an apocalyptic number.

123369114781 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123369114781 is a deficient number, since it is larger than the sum of its proper divisors (14130706139).

123369114781 is a wasteful number, since it uses less digits than its factorization.

123369114781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31197 (or 31186 counting only the distinct ones).

The product of its digits is 217728, while the sum is 46.

The spelling of 123369114781 in words is "one hundred twenty-three billion, three hundred sixty-nine million, one hundred fourteen thousand, seven hundred eighty-one".