123281976839 has 16 divisors (see below), whose sum is σ = 145384488000. Its totient is φ = 104482933632.

The previous prime is 123281976757. The next prime is 123281976863. The reversal of 123281976839 is 938679182321.

It is not a de Polignac number, because 123281976839 - 2¹² = 123281972743 is a prime.

It is a super-3 number, since 3×123281976839³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123281978839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1988702 + ... + 2049755.

It is an arithmetic number, because the mean of its divisors is an integer number (9086530500).

Almost surely, 2^123281976839 is an apocalyptic number.

123281976839 is a deficient number, since it is larger than the sum of its proper divisors (22102511161).

123281976839 is an frugal number, since it uses more digits than its factorization.

123281976839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4038567 (or 4038553 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 59.

The spelling of 123281976839 in words is "one hundred twenty-three billion, two hundred eighty-one million, nine hundred seventy-six thousand, eight hundred thirty-nine".