2531003 has 4 divisors (see below), whose sum is σ = 2534448. Its totient is φ = 2527560.

The previous prime is 2530999. The next prime is 2531017. The reversal of 2531003 is 3001352.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2531003 - 2² = 2530999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2531083) 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, 128 + ... + 2253.

It is an arithmetic number, because the mean of its divisors is an integer number (633612).

2^2531003 is an apocalyptic number.

2531003 is a deficient number, since it is larger than the sum of its proper divisors (3445).

2531003 is a wasteful number, since it uses less digits than its factorization.

2531003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 2531003 is about 1590.9126311649. The cubic root of 2531003 is about 136.2796114413.

Adding to 2531003 its reverse (3001352), we get a palindrome (5532355).

The spelling of 2531003 in words is "two million, five hundred thirty-one thousand, three".