1230445312 has 72 divisors (see below), whose sum is σ = 2617677216. Its totient is φ = 575225856.

The previous prime is 1230445309. The next prime is 1230445331. The reversal of 1230445312 is 2135440321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 725938 + ... + 727630.

It is an arithmetic number, because the mean of its divisors is an integer number (36356628).

Almost surely, 2^1230445312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230445312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1308838608).

1230445312 is an abundant number, since it is smaller than the sum of its proper divisors (1387231904).

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

1230445312 is a wasteful number, since it uses less digits than its factorization.

1230445312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893 (or 1879 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1230445312 is about 35077.7039157354. The cubic root of 1230445312 is about 1071.5705564350.

Adding to 1230445312 its reverse (2135440321), we get a palindrome (3365885633).

The spelling of 1230445312 in words is "one billion, two hundred thirty million, four hundred forty-five thousand, three hundred twelve".