2131503 has 8 divisors (see below), whose sum is σ = 3100416. Its totient is φ = 1291800.

The previous prime is 2131483. The next prime is 2131513. The reversal of 2131503 is 3051312.

It is a happy number.

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

It is not a de Polignac number, because 2131503 - 2⁸ = 2131247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32263 + ... + 32328.

It is an arithmetic number, because the mean of its divisors is an integer number (387552).

2^2131503 is an apocalyptic number.

2131503 is a deficient number, since it is larger than the sum of its proper divisors (968913).

2131503 is a wasteful number, since it uses less digits than its factorization.

2131503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64605.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 2131503 is about 1459.9667804440. The cubic root of 2131503 is about 128.6950914258.

Adding to 2131503 its reverse (3051312), we get a palindrome (5182815).

The spelling of 2131503 in words is "two million, one hundred thirty-one thousand, five hundred three".