1231003004 has 24 divisors (see below), whose sum is σ = 2685825408. Its totient is φ = 479611440.

The previous prime is 1231002959. The next prime is 1231003009. The reversal of 1231003004 is 4003001321.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a self number, because there is not a number n which added to its sum of digits gives 1231003004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231003009) 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 7 ways as a sum of consecutive naturals, for example, 1998074 + ... + 1998689.

It is an arithmetic number, because the mean of its divisors is an integer number (111909392).

Almost surely, 2^1231003004 is an apocalyptic number.

1231003004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1231003004 is an abundant number, since it is smaller than the sum of its proper divisors (1454822404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231003004 is a wasteful number, since it uses less digits than its factorization.

1231003004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3996785 (or 3996783 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1231003004 is about 35085.6523952456. The cubic root of 1231003004 is about 1071.7324263035.

Adding to 1231003004 its reverse (4003001321), we get a palindrome (5234004325).

The spelling of 1231003004 in words is "one billion, two hundred thirty-one million, three thousand, four".