1231003003 has 4 divisors (see below), whose sum is σ = 1231352640. Its totient is φ = 1230653368.

The previous prime is 1231002959. The next prime is 1231003009. The reversal of 1231003003 is 3003001321.

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

It is a cyclic number.

It is not a de Polignac number, because 1231003003 - 2¹³ = 1230994811 is a prime.

It is a Duffinian number.

1231003003 is a modest number, since divided by 3003 gives 1231 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1231003009) 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, 169483 + ... + 176596.

It is an arithmetic number, because the mean of its divisors is an integer number (307838160).

Almost surely, 2^1231003003 is an apocalyptic number.

1231003003 is a deficient number, since it is larger than the sum of its proper divisors (349637).

1231003003 is an equidigital number, since it uses as much as digits as its factorization.

1231003003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349636.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 1231003003 is about 35085.6523809947. The cubic root of 1231003003 is about 1071.7324260133.

Adding to 1231003003 its reverse (3003001321), we get a palindrome (4234004324).

The spelling of 1231003003 in words is "one billion, two hundred thirty-one million, three thousand, three".