2031520 has 24 divisors (see below), whose sum is σ = 4799844. Its totient is φ = 812544.

The previous prime is 2031493. The next prime is 2031541. The reversal of 2031520 is 251302.

It can be written as a sum of positive squares in 2 ways, for example, as 1926544 + 104976 = 1388^2 + 324^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2031520.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6189 + ... + 6508.

2^2031520 is an apocalyptic number.

2031520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031520 is an abundant number, since it is smaller than the sum of its proper divisors (2768324).

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

2031520 is a wasteful number, since it uses less digits than its factorization.

2031520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12712 (or 12704 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 2031520 is about 1425.3140004925. The cubic root of 2031520 is about 126.6505365733.

Adding to 2031520 its reverse (251302), we get a palindrome (2282822).

The spelling of 2031520 in words is "two million, thirty-one thousand, five hundred twenty".