123923020281 has 4 divisors (see below), whose sum is σ = 165230693712. Its totient is φ = 82615346852.

The previous prime is 123923020261. The next prime is 123923020289. The reversal of 123923020281 is 182020329321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123923020281 - 2⁷ = 123923020153 is a prime.

It is a super-2 number, since 2×123923020281² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123923020289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20653836711 + ... + 20653836716.

It is an arithmetic number, because the mean of its divisors is an integer number (41307673428).

Almost surely, 2^123923020281 is an apocalyptic number.

It is an amenable number.

123923020281 is a deficient number, since it is larger than the sum of its proper divisors (41307673431).

123923020281 is an equidigital number, since it uses as much as digits as its factorization.

123923020281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41307673430.

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 123923020281 in words is "one hundred twenty-three billion, nine hundred twenty-three million, twenty thousand, two hundred eighty-one".