2031816 has 16 divisors (see below), whose sum is σ = 5079600. Its totient is φ = 677264.

The previous prime is 2031811. The next prime is 2031839. The reversal of 2031816 is 6181302.

It is a junction number, because it is equal to n+sod(n) for n = 2031792 and 2031801.

It is not an unprimeable number, because it can be changed into a prime (2031811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42306 + ... + 42353.

It is an arithmetic number, because the mean of its divisors is an integer number (317475).

2^2031816 is an apocalyptic number.

It is an amenable number.

2031816 is an abundant number, since it is smaller than the sum of its proper divisors (3047784).

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

2031816 is a wasteful number, since it uses less digits than its factorization.

2031816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84668 (or 84664 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 2031816 is about 1425.4178334790. The cubic root of 2031816 is about 126.6566874256.

The spelling of 2031816 in words is "two million, thirty-one thousand, eight hundred sixteen".