123828731 has 8 divisors (see below), whose sum is σ = 141198624. Its totient is φ = 107579520.

The previous prime is 123828721. The next prime is 123828737. The reversal of 123828731 is 137828321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123828731 - 2¹⁴ = 123812347 is a prime.

It is a super-2 number, since 2×123828731² = 30667109242140722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123828691 and 123828700.

It is not an unprimeable number, because it can be changed into a prime (123828737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279935 + ... + 280376.

It is an arithmetic number, because the mean of its divisors is an integer number (17649828).

Almost surely, 2^123828731 is an apocalyptic number.

123828731 is a deficient number, since it is larger than the sum of its proper divisors (17369893).

123828731 is a wasteful number, since it uses less digits than its factorization.

123828731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560341.

The product of its digits is 16128, while the sum is 35.

The square root of 123828731 is about 11127.8358632755. The cubic root of 123828731 is about 498.4334046846.

The spelling of 123828731 in words is "one hundred twenty-three million, eight hundred twenty-eight thousand, seven hundred thirty-one".