2131502403 has 16 divisors (see below), whose sum is σ = 2995574400. Its totient is φ = 1344415680.

The previous prime is 2131502369. The next prime is 2131502413. The reversal of 2131502403 is 3042051312.

It is not a de Polignac number, because 2131502403 - 2⁶ = 2131502339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2131502403.

It is not an unprimeable number, because it can be changed into a prime (2131502413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18808 + ... + 67946.

It is an arithmetic number, because the mean of its divisors is an integer number (187223400).

Almost surely, 2^2131502403 is an apocalyptic number.

2131502403 is a deficient number, since it is larger than the sum of its proper divisors (864071997).

2131502403 is a wasteful number, since it uses less digits than its factorization.

2131502403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49922.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2131502403 is about 46168.1968783707. The cubic root of 2131502403 is about 1286.9507941068.

Adding to 2131502403 its reverse (3042051312), we get a palindrome (5173553715).

The spelling of 2131502403 in words is "two billion, one hundred thirty-one million, five hundred two thousand, four hundred three".