3123138 has 32 divisors (see below), whose sum is σ = 6727104. Its totient is φ = 963072.

The previous prime is 3123137. The next prime is 3123143. The reversal of 3123138 is 8313213.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3123137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6606 + ... + 7062.

It is an arithmetic number, because the mean of its divisors is an integer number (210222).

Almost surely, 2^3123138 is an apocalyptic number.

3123138 is an abundant number, since it is smaller than the sum of its proper divisors (3603966).

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

3123138 is a wasteful number, since it uses less digits than its factorization.

3123138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546.

The product of its digits is 432, while the sum is 21.

The square root of 3123138 is about 1767.2402213621. The cubic root of 3123138 is about 146.1718436960.

The spelling of 3123138 in words is "three million, one hundred twenty-three thousand, one hundred thirty-eight".