1230311320 has 32 divisors (see below), whose sum is σ = 3163658400. Its totient is φ = 421820928.

The previous prime is 1230311317. The next prime is 1230311321. The reversal of 1230311320 is 231130321.

It is a junction number, because it is equal to n+sod(n) for n = 1230311294 and 1230311303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230311321) 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, 2196705 + ... + 2197264.

It is an arithmetic number, because the mean of its divisors is an integer number (98864325).

Almost surely, 2^1230311320 is an apocalyptic number.

1230311320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230311320 is an abundant number, since it is smaller than the sum of its proper divisors (1933347080).

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

1230311320 is a wasteful number, since it uses less digits than its factorization.

1230311320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4393987 (or 4393983 counting only the distinct ones).

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

The square root of 1230311320 is about 35075.7939325684. The cubic root of 1230311320 is about 1071.5316580263.

Adding to 1230311320 its reverse (231130321), we get a palindrome (1461441641).

The spelling of 1230311320 in words is "one billion, two hundred thirty million, three hundred eleven thousand, three hundred twenty".