1230431520 has 96 divisors (see below), whose sum is σ = 3912245568. Its totient is φ = 325035008.

The previous prime is 1230431513. The next prime is 1230431537. The reversal of 1230431520 is 251340321.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39382 + ... + 63338.

It is an arithmetic number, because the mean of its divisors is an integer number (40752558).

Almost surely, 2^1230431520 is an apocalyptic number.

1230431520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230431520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1956122784).

1230431520 is an abundant number, since it is smaller than the sum of its proper divisors (2681814048).

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

1230431520 is a wasteful number, since it uses less digits than its factorization.

1230431520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24082 (or 24074 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1230431520 is about 35077.5073230696. The cubic root of 1230431520 is about 1071.5665526932.

Adding to 1230431520 its reverse (251340321), we get a palindrome (1481771841).

The spelling of 1230431520 in words is "one billion, two hundred thirty million, four hundred thirty-one thousand, five hundred twenty".