2031813 has 12 divisors (see below), whose sum is σ = 3354208. Its totient is φ = 1161000.

The previous prime is 2031811. The next prime is 2031839. The reversal of 2031813 is 3181302.

It is not a de Polignac number, because 2031813 - 2¹ = 2031811 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 16063 + ... + 16188.

2^2031813 is an apocalyptic number.

It is an amenable number.

2031813 is a deficient number, since it is larger than the sum of its proper divisors (1322395).

2031813 is a wasteful number, since it uses less digits than its factorization.

2031813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32264 (or 32261 counting only the distinct ones).

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

The square root of 2031813 is about 1425.4167811556. The cubic root of 2031813 is about 126.6566250889.

It can be divided in two parts, 203 and 1813, that added together give a triangular number (2016 = T₆₃).

The spelling of 2031813 in words is "two million, thirty-one thousand, eight hundred thirteen".