2031678 has 48 divisors (see below), whose sum is σ = 4972032. Its totient is φ = 594000.

The previous prime is 2031671. The next prime is 2031691. The reversal of 2031678 is 8761302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5973 + ... + 6303.

It is an arithmetic number, because the mean of its divisors is an integer number (103584).

2^2031678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2031678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2486016).

2031678 is an abundant number, since it is smaller than the sum of its proper divisors (2940354).

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

2031678 is a wasteful number, since it uses less digits than its factorization.

2031678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 378 counting only the distinct ones).

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

The square root of 2031678 is about 1425.3694257981. The cubic root of 2031678 is about 126.6538198728.

It can be divided in two parts, 203 and 1678, that added together give a palindrome (1881).

The spelling of 2031678 in words is "two million, thirty-one thousand, six hundred seventy-eight".