1230131320 has 32 divisors (see below), whose sum is σ = 3019414320. Its totient is φ = 447320320.

The previous prime is 1230131299. The next prime is 1230131321. The reversal of 1230131320 is 231310321.

It is a junction number, because it is equal to n+sod(n) for n = 1230131294 and 1230131303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230131321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1397437 + ... + 1398316.

Almost surely, 2^1230131320 is an apocalyptic number.

1230131320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230131320 is an abundant number, since it is smaller than the sum of its proper divisors (1789283000).

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

1230131320 is a wasteful number, since it uses less digits than its factorization.

1230131320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795775 (or 2795771 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1230131320 is about 35073.2279666415. The cubic root of 1230131320 is about 1071.4793988671.

Adding to 1230131320 its reverse (231310321), we get a palindrome (1461441641).

The spelling of 1230131320 in words is "one billion, two hundred thirty million, one hundred thirty-one thousand, three hundred twenty".