2310138 has 12 divisors (see below), whose sum is σ = 5005338. Its totient is φ = 770040.

The previous prime is 2310137. The next prime is 2310157. The reversal of 2310138 is 8310132.

It can be written as a sum of positive squares in only one way, i.e., 1505529 + 804609 = 1227^2 + 897^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 128341 = 2310138 / (2 + 3 + 1 + 0 + 1 + 3 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 2310138.

It is not an unprimeable number, because it can be changed into a prime (2310137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64153 + ... + 64188.

2^2310138 is an apocalyptic number.

2310138 is an abundant number, since it is smaller than the sum of its proper divisors (2695200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2310138 is a wasteful number, since it uses less digits than its factorization.

2310138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128349 (or 128346 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2310138 is about 1519.9138133460. The cubic root of 2310138 is about 132.1942731637.

The spelling of 2310138 in words is "two million, three hundred ten thousand, one hundred thirty-eight".