2231131503 has 4 divisors (see below), whose sum is σ = 2974842008. Its totient is φ = 1487421000.

The previous prime is 2231131499. The next prime is 2231131517. The reversal of 2231131503 is 3051311322.

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

It is not a de Polignac number, because 2231131503 - 2² = 2231131499 is a prime.

It is a super-3 number, since 3×2231131503³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2231131503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231131103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371855248 + ... + 371855253.

It is an arithmetic number, because the mean of its divisors is an integer number (743710502).

Almost surely, 2^2231131503 is an apocalyptic number.

2231131503 is a deficient number, since it is larger than the sum of its proper divisors (743710505).

2231131503 is an equidigital number, since it uses as much as digits as its factorization.

2231131503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743710504.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 2231131503 is about 47234.8547473156. The cubic root of 2231131503 is about 1306.6974877399.

Adding to 2231131503 its reverse (3051311322), we get a palindrome (5282442825).

The spelling of 2231131503 in words is "two billion, two hundred thirty-one million, one hundred thirty-one thousand, five hundred three".