2531919 has 8 divisors (see below), whose sum is σ = 3635632. Its totient is φ = 1558080.

The previous prime is 2531917. The next prime is 2531923. The reversal of 2531919 is 9191352.

2531919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2531919 - 2¹ = 2531917 is a prime.

It is a super-2 number, since 2×2531919² = 12821227645122, which contains 22 as substring.

It is an Ulam number.

2531919 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32422 + ... + 32499.

It is an arithmetic number, because the mean of its divisors is an integer number (454454).

2^2531919 is an apocalyptic number.

2531919 is a deficient number, since it is larger than the sum of its proper divisors (1103713).

2531919 is a wasteful number, since it uses less digits than its factorization.

2531919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64937.

The product of its digits is 2430, while the sum is 30.

The square root of 2531919 is about 1591.2004901960. The cubic root of 2531919 is about 136.2960498609.

The spelling of 2531919 in words is "two million, five hundred thirty-one thousand, nine hundred nineteen".