2031478 has 4 divisors (see below), whose sum is σ = 3047220. Its totient is φ = 1015738.

The previous prime is 2031473. The next prime is 2031487. The reversal of 2031478 is 8741302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8741302 = 2 ⋅4370651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507868 + ... + 507871.

It is an arithmetic number, because the mean of its divisors is an integer number (761805).

2^2031478 is an apocalyptic number.

2031478 is a deficient number, since it is larger than the sum of its proper divisors (1015742).

2031478 is a wasteful number, since it uses less digits than its factorization.

2031478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015741.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 2031478 is about 1425.2992668208. The cubic root of 2031478 is about 126.6496637688.

It can be divided in two parts, 203 and 1478, that added together give a square (1681 = 41²).

The spelling of 2031478 in words is "two million, thirty-one thousand, four hundred seventy-eight".