1231017304 has 32 divisors (see below), whose sum is σ = 2531071440. Its totient is φ = 556646400.

The previous prime is 1231017301. The next prime is 1231017313. The reversal of 1231017304 is 4037101321.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231017301) 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 7 ways as a sum of consecutive naturals, for example, 19257 + ... + 53224.

Almost surely, 2^1231017304 is an apocalyptic number.

It is an amenable number.

1231017304 is an abundant number, since it is smaller than the sum of its proper divisors (1300054136).

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

1231017304 is a wasteful number, since it uses less digits than its factorization.

1231017304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72691 (or 72687 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1231017304 is about 35085.8561816582. The cubic root of 1231017304 is about 1071.7365762296.

Adding to 1231017304 its reverse (4037101321), we get a palindrome (5268118625).

It can be divided in two parts, 1231017 and 304, that added together give a palindrome (1231321).

The spelling of 1231017304 in words is "one billion, two hundred thirty-one million, seventeen thousand, three hundred four".