1312222230 has 192 divisors, whose sum is σ = 3848420160. Its totient is φ = 307507200.

The previous prime is 1312222217. The next prime is 1312222237. The reversal of 1312222230 is 322222131.

1312222230 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312222237) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4669690 + ... + 4669970.

It is an arithmetic number, because the mean of its divisors is an integer number (20043855).

Almost surely, 2^1312222230 is an apocalyptic number.

1312222230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312222230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1924210080).

1312222230 is an abundant number, since it is smaller than the sum of its proper divisors (2536197930).

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

1312222230 is a wasteful number, since it uses less digits than its factorization.

1312222230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1312222230 is about 36224.6080724140. The cubic root of 1312222230 is about 1094.8025414888.

Adding to 1312222230 its reverse (322222131), we get a palindrome (1634444361).

Subtracting from 1312222230 its reverse (322222131), we obtain a palindrome (990000099).

The spelling of 1312222230 in words is "one billion, three hundred twelve million, two hundred twenty-two thousand, two hundred thirty".