123281969 has 4 divisors (see below), whose sum is σ = 123352896. Its totient is φ = 123211044.

The previous prime is 123281941. The next prime is 123281971. The reversal of 123281969 is 969182321.

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 123281969 - 2⁸ = 123281713 is a prime.

It is a super-2 number, since 2×123281969² = 30396887761033922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123281269) 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, 32789 + ... + 36354.

It is an arithmetic number, because the mean of its divisors is an integer number (30838224).

Almost surely, 2^123281969 is an apocalyptic number.

It is an amenable number.

123281969 is a deficient number, since it is larger than the sum of its proper divisors (70927).

123281969 is an equidigital number, since it uses as much as digits as its factorization.

123281969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70926.

The product of its digits is 46656, while the sum is 41.

The square root of 123281969 is about 11103.2413735810. The cubic root of 123281969 is about 497.6987164378.

The spelling of 123281969 in words is "one hundred twenty-three million, two hundred eighty-one thousand, nine hundred sixty-nine".