1302231312 has 90 divisors (see below), whose sum is σ = 3774793802. Its totient is φ = 419069952.

The previous prime is 1302231311. The next prime is 1302231361. The reversal of 1302231312 is 2131322031.

1302231312 is a `hidden beast` number, since 130 + 223 + 1 + 312 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 532501776 + 769729536 = 23076^2 + 27744^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1302231311) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 115728 + ... + 126480.

Almost surely, 2^1302231312 is an apocalyptic number.

1302231312 is a gapful number since it is divisible by the number (12) 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 1302231312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1887396901).

1302231312 is an abundant number, since it is smaller than the sum of its proper divisors (2472562490).

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

1302231312 is a wasteful number, since it uses less digits than its factorization.

1302231312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10825 (or 10787 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1302231312 is about 36086.4422186505. The cubic root of 1302231312 is about 1092.0169461606.

Adding to 1302231312 its reverse (2131322031), we get a palindrome (3433553343).

The spelling of 1302231312 in words is "one billion, three hundred two million, two hundred thirty-one thousand, three hundred twelve".