123812307 has 20 divisors (see below), whose sum is σ = 187496760. Its totient is φ = 81406944.

The previous prime is 123812263. The next prime is 123812321. The reversal of 123812307 is 703218321.

It is not a de Polignac number, because 123812307 - 2¹⁰ = 123811283 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123812327) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4557 + ... + 16382.

It is an arithmetic number, because the mean of its divisors is an integer number (9374838).

Almost surely, 2^123812307 is an apocalyptic number.

123812307 is a deficient number, since it is larger than the sum of its proper divisors (63684453).

123812307 is an equidigital number, since it uses as much as digits as its factorization.

123812307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21024 (or 21015 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 123812307 is about 11127.0978696154. The cubic root of 123812307 is about 498.4113671706.

The spelling of 123812307 in words is "one hundred twenty-three million, eight hundred twelve thousand, three hundred seven".