1231012503 has 48 divisors (see below), whose sum is σ = 2142054720. Its totient is φ = 666312192.

The previous prime is 1231012487. The next prime is 1231012529. The reversal of 1231012503 is 3052101321.

It is not a de Polignac number, because 1231012503 - 2⁴ = 1231012487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231012103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 90475 + ... + 103187.

It is an arithmetic number, because the mean of its divisors is an integer number (44626140).

Almost surely, 2^1231012503 is an apocalyptic number.

1231012503 is a deficient number, since it is larger than the sum of its proper divisors (911042217).

1231012503 is a wasteful number, since it uses less digits than its factorization.

1231012503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12808 (or 12805 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1231012503 is about 35085.7877637085. The cubic root of 1231012503 is about 1071.7351829608.

Adding to 1231012503 its reverse (3052101321), we get a palindrome (4283113824).

It can be divided in two parts, 123101 and 2503, that multiplied together give a palindrome (308121803).

The spelling of 1231012503 in words is "one billion, two hundred thirty-one million, twelve thousand, five hundred three".