123815349 has 12 divisors (see below), whose sum is σ = 204393696. Its totient is φ = 70751592.

The previous prime is 123815327. The next prime is 123815353. The reversal of 123815349 is 943518321.

It is not a de Polignac number, because 123815349 - 2⁵ = 123815317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123815309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 982599 + ... + 982724.

It is an arithmetic number, because the mean of its divisors is an integer number (17032808).

Almost surely, 2^123815349 is an apocalyptic number.

It is an amenable number.

123815349 is a deficient number, since it is larger than the sum of its proper divisors (80578347).

123815349 is a wasteful number, since it uses less digits than its factorization.

123815349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965336 (or 1965333 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 123815349 is about 11127.2345621003. The cubic root of 123815349 is about 498.4154490345.

The spelling of 123815349 in words is "one hundred twenty-three million, eight hundred fifteen thousand, three hundred forty-nine".