123215683 has 4 divisors (see below), whose sum is σ = 126081208. Its totient is φ = 120350160.

The previous prime is 123215663. The next prime is 123215723. The reversal of 123215683 is 386512321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 386512321 = 13 ⋅29731717.

It is a cyclic number.

It is not a de Polignac number, because 123215683 - 2²¹ = 121118531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123215633) 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, 1432698 + ... + 1432783.

It is an arithmetic number, because the mean of its divisors is an integer number (31520302).

Almost surely, 2^123215683 is an apocalyptic number.

123215683 is a deficient number, since it is larger than the sum of its proper divisors (2865525).

123215683 is an equidigital number, since it uses as much as digits as its factorization.

123215683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2865524.

The product of its digits is 8640, while the sum is 31.

The square root of 123215683 is about 11100.2559880392. The cubic root of 123215683 is about 497.6094998992.

The spelling of 123215683 in words is "one hundred twenty-three million, two hundred fifteen thousand, six hundred eighty-three".