2039531 has 4 divisors (see below), whose sum is σ = 2196432. Its totient is φ = 1882632.

The previous prime is 2039509. The next prime is 2039549. The reversal of 2039531 is 1359302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2039531 - 2⁶ = 2039467 is a prime.

It is a super-2 number, since 2×2039531² = 8319373399922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2039497 and 2039506.

It is not an unprimeable number, because it can be changed into a prime (2039501) 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, 78431 + ... + 78456.

It is an arithmetic number, because the mean of its divisors is an integer number (549108).

2^2039531 is an apocalyptic number.

2039531 is a deficient number, since it is larger than the sum of its proper divisors (156901).

2039531 is a wasteful number, since it uses less digits than its factorization.

2039531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156900.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 2039531 is about 1428.1214934311. The cubic root of 2039531 is about 126.8167941414.

The spelling of 2039531 in words is "two million, thirty-nine thousand, five hundred thirty-one".